OSX and Poser 9 would be very welcome.

Still to be clarified: ignore JCMs, or try to process them.

If yes, how to identify a particular JCM. A rotation dial can control multiple JCMs.

Hard to judge which local morph targets must fall in which group. One could try to group BY-NAME or BY-ERC code. And still, how to slave the new morph accordingly to the original JCM, that is not trivial. 

Maybe the cloth makers have experience on how to hande JCMs in a conform cloth?