Yeah well as I mentioned in my first post I use LightWave (9.6 64 bit) for modeling and OBJ hacking. believe me when I tell you it's abilities to group polygons and vertex selection sets is about as easy and fast as can possibly be. Select loops, hotkeys for expanding or shrinking selections, select edges, points or polys, reverse selections and all that.
I wouldn't spend two minutes in Poser if I needed to regroup anything more than a six sided cube. ;-)

Edit:
Oh yeah, by the way, LW's OBJ export is read perfectly by Poser, so that's not an issue. It's also great for making morph targets because it can export only vertices if you want, making the files smaller, and you don't need facets for MT's.