I just blew up my first pack of 10 people in a level 69 BG last night. Damn you, mosg2...

One question-- if you folks have spent time leveling in instances, did you run one Blood DK as a tank?? I've cleared Utgarde Keep a couple times using all frost spec (but killing bosses with everyone in Blood Presence, if appropriate). It's a little dodgy on bosses, and I feel like my healer is repeatedly saving the day on the tougher guys. I wonder if I should dual-spec one into Blood and setup a true tank for at least the boss fights...