I'm playing the warrior right now and after leveling to 70 as a dual wielding titan gripping furious SOB I wasn't real happy with him. Then a guildie suggest I take him prot, hooked me up with the cobalt set, and AOE grind all my quests to have more fun.
I gave it a try.
I died attempting to solo Harold Lane too many times to count. Then something clicked. Pieces fell into place and I was a tank again. Naturally I joined LFG for a random and was pleasantly surprised with the insta-q.
UK.
I haven't tanked in almost a year. I've never tanked with a warrior. All my tanking knowledge came from being a Bear in BC and DK tanking a year ago.
I think I did OK.

The Druid and Shammy were both melee toons so they got exposed to all the bombs at my feet. When the tank takes 70% of the damage for the entire run it is a safe bet it was a smooth one.
Damn I've missed being a tank. Just don't tell my wife.