I tried some tanking on this character yesterday.
First dungeon the priest kept casting angelic feather on me even though I was always ahead of the group.
2nd dungeon I always pull at least 2-3 packs of mobs; the dps kept pulling additional packs making the fights more hectic for me to grab aggro and taxing the healer.
After the 2nd dungeon I went back to questing. I guess I am too slow to be an acceptable tank.