I went back through the old world a few weeks ago doing quests to finish off my Loremaster achievement and DBW was annoying the crap out of me. I'd come riding in, kill the few mobs I needed for a quest then go to mount up and couldn't mount cause of the DBW proc. Cancel the proc, mount up, ride to the next group, kill them and by then DBW's CD is up so it procs again!
Of course I could have just removed it, but that would be too much effort!