I tried out my brand new protspecc in MT yesterday. Half way through the instance the rogue whispers me and asks if I would be interested in joining their guild later on, since they thought of doing raids, needed a tank and thought I tanked "good as hell".
Aw that's so sweet.
Tanking as prot is very easy anyway, even when you have crazy ass people in the party who overpull and other stupid stuff. I like it.
And I only did 4% less dmg than the rogue and shadowpriest! Yeah!