I've been doing a lot of leveling, going through MSQ on two characters, so the majority of tanks I encounter have been the single pulling kind. It doesn't bother me in the slightest, although wall 2 wall pulls tend to me more exciting, especially when I'm healing.

I've yet to spend more than 30 mins in a dungeon single pull runs can be pretty quick regardless with holy spam and some half decent DPS. I prefer a tank pull at the pace they are most comfortable with than try to wall 2 wall because it's 'what they're supposed to do' and give my poor whm bum a heart attack by failing to understand proper CD management.