Offspec heroic tanking?

[Delc]

The big difference will be when AoE tanking, and low rage times. Mortal strike and blood thirst require a ton of rage when compared to shield slam and devastate. The loss of the thunder clap talents, and shockwave will make AoE tanking harder. Incoming damage will be higher, but not by a massive amount, so it should be manageable. As long as the rest of the group assists, and the healer knows what to expect you should be fine.