I often do DF groups, actually. Not PF, DF. The tank dying to double WW is very rare and usually cleared up in one or two mistakes because it's really self-explanatory. Wipes from Slipstream are more common than double WW deaths. Hell, I see tanks more often screwing up OT job than MT job because they don't properly set aggro on Chirada or the spiny, resulting in either the spiny heading back to MT or Chirada heading to the healers.
