After reading this Thread I switched over to hemo, since none of the other rogues was willing to try hemo and as class officer I had to give it a try
Hitting some trash with our warrior mt, it seemed to give tanks a benefit of approximately 30-50 tps (but thats not for sure, since we could try it on <lv73 mobs only, if someone has done better testing there please post some recap^^) and in melee dps spreadsheets it showed as ~30-50 dps more for rogues and warriors, so it looked like it was worth a try.
I chose the 11/28/22 specc and had a setup consisting of 1 warrior (bs) 1 feral / hunter and 2 other rogues in my group since there are only 3 shamans in our guild, one enhance, who has recently reached lv 70 so no gear for 25er instances, 1 elemental and 1 heal shamy so theres no wf left for our melees
Brutalis is specced combat sword, Targon combat dagger and Wildatheart 19/42 mutilate.
our 2 combat rogues have s2 weapons and wild has prince dagger and emerald ripper while I have Vindicators Brand MH and s2 offhand so I'm slightly behind regarding equip :/
Heres our WWS history, theres no chance in speccs over the course of this weeks with our combat / hemo rogues.
Wow Web Stats
Most of the fights I was able to have a similiar dps output, sometimes because of higher dps uptime, partly because the other had to do special jobs (like clicking cubes) but most of the time we were full dps.
It seems like Hemo is able to compare with the other speccs without windfury and even inferior equip, next week I'll get s2 mh so I'm most likely to have an increase in dps of ~50 considering the spreadsheets, reports will follow

so long, Palle

Well, after reading all 13 pages of this thead I have to say I'm coming out of it pretty disappointed that no real solid evidence was posted comparing one person's combat swords vs hemo swords dps on a reliable boss encounter (example naj'entus).

What I do know is, between all this arguing about how well serrated blades scales versus combat potency, etc, one fact seems to of remained ignored. The hemo debuff, other than a raid's slowly increasing average crit rate/armor reduction, does not scale. I can pretty easily output 1300+ dps on most bosses these days. Shade of akama 1700+ pretty easy. Rogues with warglaives and DST and 4/5 t6 are breaking 2k reliable dps. Add another 13-16 dpsers in a raid to the mix all doing their 900-1400 dps and I gotta say, why the heck does this thread even matter? We're talking about a 85dps raid buff. Maybe a 126 if everyone crits, and this is assuming every charge is eaten right? That's on a boss too. What about the dps you're losing on trash? You are entirely rupture dependant as hemo, most trash in hyjal when focus fired dies faster than the duration of a rupture, much less the time it takes to build up the combo points to do a full rupture in addition to the rupture ticking to duration. Since dps is often split on trash you defintely wont be getting all the charges eaten as often as on a boss. Multiple people here have admitted their dps has suffered on trash, last time I checked, trash is what most raid time is spent on. Trash is continually underestimated in importance compared to boss attempts. Go to Hyjal and say trash isn't important.

The only way I can see hemo being worth it as a PvE build to someone who is using it to 'contribute to the raid's dps' is if the debuff scaled. Since the only possible way I can think of that it could scale is with combat potency, it seems a moot point. Combat potency Hemo builds have continually been labeled as inferior (to the initially proposed build) throughout this thread.

In fact the biggest point of the debate in this thread doesn't even seem to be about the hemo debuff. It revolves around the serrated blades talent, specifically the armor it reduces. If you want armor reduction so bad, there are several pieces in Hyjal/BT that provide it and since we've pretty consistantly stated that you need to be BT/Hyjal geared for this spec to be truly parallel to combat swords it seems most logical to remain combat swords and pick up the armor reduction gear. Afterall, as was stated above, even at the most ideal circumstances, serrated blades does not seem to scale as well as combat potency(Note I am depending upon the math of others supporting that fact, as I am incredibly poor at math).

EDIT: Btw, I don't mean to offend anyone by this post, especially the original author. I came in to this thread extremely curious and hopeful. I guess I'm just a little disenchanted atm :-/ Sorry for the negativity.

Hey peeps..i've long been a shadow reader of the forums here and have learned much about my rogue. Recently, this spec caught my eye so i said what the heck, i'll give it a shot since its got good PVP viability.

Lo and behold, it still does pretty darn good dps considering the lost of a few combat talents. I know my gear is not the ideal setup for this spec, however I still did pretty well staying about 1% close to the top combat rogue in our guild. I must say i'm pretty surprise by the results and also this lets me PVP alot better in my 2v2 team I just started.

Its a refreshing perspective no doubt. If you bored out of your mind with ur standard builds, try it.

I ran the numbers in the DPS spreadsheet (2.2.0.8) real quick with the gear I had in there already, and 11/20/30 is still better than 11/21/29... but only by 1-3 DPS overall. Blade Flurry would give more utility in trash/boss fights with multiple mobs, so losing 1-3 DPS and picking that up would be just a matter of personal choice. Also, that version I'm using does take into account the haste rating nerf of the next patch... sigh... now I need a beer just thinking about that.

And I haven't gotten to test this yet because Kael and Supremus are being stubborn with their drops and neither mace has dropped since I started working on this. But once one of them are finally nice to me, then i'll let you know about the test results... although I'm almost positive that I will lose around 50-75 DPS from combat swords.

Oh, and I took Opportunity 5 because... well... what other talent in that tree on the way to Deadliness would give me any kind of DPS boost for a hemo build? The final point in Setup won't do anything since I shouldn't be getting hit anyway, but I needed filler points... hence the 2/3 Setup in my build. I mean, I guess I could snag Elusiveness 2 to Vanish/Garrote more on a boss, but I don't know if the Vanish 1:30 sooner would be better than a 30% increase in Garrote damage from normally using Vanish. Depending on the boss and the fight time, I guess it could be... but meh.