Ya'll talking about tank stance like Shirk doesn't even exist. I never take off tank stance, just use Shirk as OT when my aggro starts to get too high. It's a free oGCD and you will never need it as OT but it's better to just use it when you don't have too many oGCD's to use than to worry about using 2 GCD's and moving your burst window rotation to fit in 2 with provoke and tank stance. Aggro is a nonfactor in this game anymore and it hasn't mattered since 3.0 stance dancing.
