For me? Hours would be fine. I already sometimes render over the course of days for an animation and hours if I am ray-tracing a still... there is no reason why I wouldn'twait for this is it really worked. But I am thinking of something less dramatic. Just something to nudge out those faces of a clothing item that were having poke-through... not a generalized cloth draping tool... those are available for Max. So I think the quick/easy "poke stopper" would be worth about 20-30 minutes if needed ... I would simply pose the model and run it to fix the clothing.