Quote - ....and for all intents and purposes when you import the mesh into Poser it splits those vertices at the the group boundary so is a non issue.

i've never had that happen once, and i use vertex groups all the time in dynamic clothes.  maybe it's different for making figures, but counting on that seems like counting on a bug, since Poser understands groups as vertices, too.  and how is it faster? it would only matter if you were selecting by hand, and that seems awfully slow.