I've done a fair bit of bagging in the Woof 12's and also Simon Rs slug at some events. I can tell you that bagging in the Woof is a lot easier than bagging in the slug. With no false floor and a very dished hull shape you keep the CoG very low. Standing 'on top' of the slug makes it quite a bit more tippy.
Saying that, as long as your crew is good at "windmilling" then they should be fine. It didn't take many drops before I was as quick as dropping with a chute, and it does make you a lot more focussed! I think from a point of view of finding a crew for events you might struggle with a bag. Finding someone good enough to crew the cherub is quite difficult as it is, but throwing the spanner in the works of having a bag will make life more difficult still.