Just some random thoughts here ....

Since you are just getting back into Poser, and want to do some clothes for M4, that might be the place to start, since M4 is not a weight-mapped figure. You can still rig stuff for him the "old way" without getting into the weight mapping tools. Old style rigging still works in both DS and Poser.

However, the La Femme and L'Homme figures are weight mapped, and the weight mapping in Poser is different than the weight mapping in DS. So if you want to do outfits for L'Homme they will probably be Poser only.

Rendo is working on Poser 12 right now, and hopefully they will address a lot of things in the process. So hang tight, start by working with what you know and then grow into the "new" stuff. 8-)

Good luck.