My experience is really that the Bismark EX DPS check is NOT as tight as people say. I had two bards in my group when practicing the other night, both were doing about 550-600 and DPS was the least of our problems. Got chitin down with only two stacks on most of us several times. At this point none of them are using WM though because it really doesn't seem to add anything in such short phases and in p2 there's too much movement for it to help.