I recently obtained a second Betrayer of Humanity, and I was wondering if anyone knew a way to make a shield macro that will equip my shield, then if I click it again go back to my offhand betrayer. I know how to do this normally, but this is kind of weird because both weapons are the same. Thanks.

Edit: Sorry for posting this twice in a row, haven't refreshed page for a few minutes. Same question as vytautas.

As stated, there is no way through macros to do exactly what you are looking for. However you really aren't gaining much by switching to a tanking weapon in the application you are talking about, and you can easily keep your MH weapon the BoH, just swapping on and off a shield. In which case your macros can just look like this:

/equipslot 17SHIELDNAME

and

/equipslot 17 WEAPONNAME


Since you don't need to change your MH weapon at all you dont have to mention it in the macro and it should work fine.

By the way, I frequently tank acolytes in 3d, and have never put on a shield or even switched out of zerker stance. Healing hasn't been a problem and since I can easily HS every swing when taking damage, neither was threat. Not that that really solves the issue, but something to consider.

I don't understand how Slam "suspending" the swing timer means you want to avoid overlapping white swings during your cast time. I think we're working with different understandings of "suspend;" I take it to mean that when I finish the slam, I'm set to have the same amount of time remaining until my next attack as I had before I started the slam.

Example: (single 3.60 speed weapon, no haste, flurry etc)

0.00: White attack.
2.00: I decide to slam, and start my 1.5 second slam cast. Note that, when I started casting, I had 1.60 seconds remaining until my next white attack would have landed.
3.50: I finish casting Slam, and Slam hits. The server sets my swing timer such that I have 1.60 seconds until my next attack.
5.10: White attack.
8.70: White attack. etc.

Assuming my above understanding of "suspends the swing timer" is correct (and if it isn't, please correct me), where in your swing timer Slam is used is irrelevant. Very loosely, it costs you (white DPS * 1.5 seconds) damage and 15 rage, and gives you (weapon damage + 250) damage. Yes, you want to avoid being busy casting Slam when, say, Bloodthirst or Whirlwind come off cooldown, but Slam being a 1.5 second cast means it fits nicely into a series of GCDs. As an aside, note that Slam might be more attractive if Flurry expires; you can use it to shift some portion of your swing timer to a time when Flurry might be up, if the Slam crit.

The issue would be if Slam is a better rage dump than HS, and that I don't know.

This would only work if you had 0 ms latency, mind. My main point was that it postpones your rage income by another 1.50 seconds, which might mean you do not have enough Rage for your next attack. Of course, if you only use it for dumping Rage, then that is a moot point. On top of it all, you won't be able to move (which might not be too big an issue in some fights). All in all, it's very situational when you'd want to use it, and most will likely just skip it.

Personally I find Heroic Strike is a better Rage dump, also because it has a chance to proc Bloodsurge, meaning you might get that instant Slam on the way.