Drop by the warrior forums and you'll see they are concerned they will never get to tank because the druid can innervate and battle rez.Are they worried that they'll never get to tank because druids can heal and moonfire spam too? Because I know that I do a lot of tanking Azgalor and then when a priest yells for an innervate I drop to caster form, lose 25000 armor, and cast an innervate and then jump back.
This happens all the time.
I don't believe that the warriors are that dumb, but if they are - no, we don't do this, it would be virtual suicide if we did do this on any hard fight, and the only time we might even think about it is if we're about to wipe unless we try something. I think I've done the barkskin/brez trick twice in my entire career. It worked once. And if I tried something like that during a raid, I'd get lynched.
I really hope that this isn't the kind of influence that the beta forums are providing. If it is, I implore you to understand why this isn't at all correct and shouldn't be a concern for any tanking class. Warriors might have reason to be concerned with the removal of crushing blows, since crushing blows were a way to limit druids over paladins and warriors. But because a druid can battle res? Seriously?