Originally Posted by Vulajin

I modeled the new Hemorrhage in my personal DPS spreadsheet using the following method:

- Using the cycle calculations in my sheet to produce an average number of special attacks performed per second, I multiplied this by 10 to figure out the average number of Hemo charges available for consumption per second.
- I then assumed some rough average figures for the individuals in the raid who would be consuming the Hemo debuff. These were 30% crit and 85% chance to land an attack. I also assumed that attacks that don't land don't consume Hemo charges. If this is wrong, please correct me and I'll fix my modeling.
- I multiplied the effect of these factors against the 36 damage provided per Hemo charge, times the number of Hemo charges available per second, to arrive at a bonus DPS estimate.
- This estimate was then added into the global DPS estimate for the build.

The gear assumed as a base for personal DPS is my own, as visible in my Armory. The following specs were considered:

1) Talent Calculator - World of Warcraft - Combat swords with [Talon of Azshara] and [Merciless Gladiator's Quickblade]
2) Talent Calculator - World of Warcraft - Combat daggers with [Fang of Vashj] and [Merciless Gladiator's Shiv]
3) Talent Calculator - World of Warcraft - 11/28/22, 2/2 W.Ex., 1/2 Dirty Deeds, [Talon of Azshara], [Merciless Gladiator's Quickblade]
4) Talent Calculator - World of Warcraft - 11/27/23, 1/2 W.Ex., 2/2 Dirty Deeds, same weapons
5) Talent Calculator - World of Warcraft - 11/28/22, 2/2 W.Ex., 1/2 Dirty Deeds, [Dragonstrike], [Merciless Gladiator's Bonecracker]
6) Talent Calculator - World of Warcraft - 11/28/22, 2/2 W.Ex., 1/2 Dirty Deeds, [Syphon of the Nathrezim], [Merciless Gladiator's Bonecracker]
7) Talent Calculator - World of Warcraft - 11/28/22, 2/2 W.Ex., 1/2 Dirty Deeds, [Syphon of the Nathrezim], [Rod of the Sun King]
8) Talent Calculator - World of Warcraft - 11/20/30, [Talon of Azshara], [Merciless Gladiator's Quickblade]
9) Talent Calculator - World of Warcraft - 11/20/30, [Dragonstrike], [Merciless Gladiator's Bonecracker]

Also note that for all sword- or mace-based builds, 2s/5r was used as the cycle (and it did turn out to be optimal for all the builds in question), while for the dagger build, 1s/3r was used.

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1) Using my standard gear and build, my theoretical DPS output is 1443.40.
2) Using combat daggers with the Fang/Shiv combo, my theoretical output is 1399.27. This is a decrease of 44.13 DPS (-3.06%). Note that this difference does not account for the additional loss of Murder on mobs that are Murder-able. The difference should actually be more like 5%.
3) The hemo/swords build with 2/2 W.Ex. and 1/2 Dirty Deeds gives a theoretical output of 1485.16 after the Hemo debuff. This is an increase of 41.77 (+2.89%) over the combat swords build. Note that Dirty Deeds is simply modeled as a 10% increase per point on special damage 35% of the time (thus it is slightly overvalued).
4) The hemo/swords build with 1/2 W.Ex. and 2/2 Dirty Deeds gives a theoretical output of 1484.44 after the Hemo debuff. This is an increase of 41.04 (+2.84%) over the combat swords build. Recall that Dirty Deeds is slightly overvalued; even still, trading one point of Weapon Expertise for one point of Dirty Deeds is found to be suboptimal. From now on, therefore, we shall only consider builds with 2/2 W.Ex. and 1/2 Dirty Deeds.
5) Using that build, then, with [Dragonstrike] and [Merciless Gladiator's Bonecracker] and mace spec, gives a theoretical DPS output of 1442.97. This is a decrease of 0.42 (-0.03%) from the combat swords build.
6) Instead using [Syphon of the Nathrezim] as a main hand increases the theoretical output to 1443.05. This is a decrease of 0.34 (-0.02%) relative to the combat swords build. Note that the "upgrade" to the slower Syphon barely matters because of the strength of Dragonstrike itself. Speed is not necessarily the end-all be-all here.
7) Per the second in a post above mine, switching in a [Rod of the Sun King] for an offhand results in a theoretical DPS output of 1425.79. This is a loss of 17.61 (-1.22%) DPS relative to the combat swords build. The energy granted by the Rod is more than offset by the huge drop in DP uptime.
8) Switching builds to 11/20/30 with swords results in a theoretical output of 1481.81. This is an increase of 38.41 (+2.66%) over the combat swords build.
9) Finally, trying 11/20/30 with maces results in a theoretical output of 1481.50. This is an increase of 38.11 (+2.64%) over the combat swords build.

Conclusions: 11/28/22 swords may very well be quite competitive with combat swords for DPS. It certainly might not be a bad investment to have one Hemo rogue in a raid, depending on quite a lot of factors of your physical DPS classes, including their crit rates, abilities used, and armor penetration. 11/20/30 will be slightly inferior to 11/28/22 with swords, but for other weapon types, it will be superior. Finally, 2/2 Weapon Expertise is likely more important and a higher priority for any combat/sub hybrid build than 2/2 Dirty Deeds.

(edit) Additionally, it does seem that 2.6 is sufficient speed for Hemo to function, even though it's not what we would normally consider "slow." [Blade of Infamy] proves to be roughly as good for an 11/28/22 build as [Talon of Azshara] and [Vengeful Gladiator's Slicer]. Of course, the MH Warglaive is by far the best Hemo weapon, but even with the Talon, Hemo damage is quite comparable to combat swords (at least assuming I've modeled it even remotely accurately).