I hope so. Even in my casual guild, I was asked to go Mistweaver and DPS on Garalon so a tank could also go DPS as he'd actually cleave. It worked but it was such an odd thing to have to do because on that fight even a rogue I'd leave in the Dust single-target DPS-wise was much more preferable to Windwalker on that fight. Simply could not keep up with multi-dotting classes and cleaving warriors, shamans, DKs, etc.