If mobs die quick enough then War at least has plenty of cds to survive without tank stance. Flash isn't very impressive with sword oath, I don't know about drk. I've seen my hp bounce around a lot tho, the sch I normally run with dps' hard so I'm always hanging by a thread, Holmgang saves my ass nearly every run at least once, and that's with tank stance, cds and 3/5 vit lol