Thanks. Not yet, there is a Release Candidate 2 that was released a couple of days ago. That one doesn't have my patches but hopefully the next one will. Considering that Blender has one of the best UV Map editor in the market, free or commercial, now we have a all-in-one solution for editing Poser content. 

Interestingly enough, the fix was accepted with some "grumbling" because I used vertex groups to store the OBJ groups. Strictly speaking the two things are not the same and vertex groups "are used for weight painting", in the words of the code maintainer :)

The fact is, if the OBJ contains defined groups, for Poser or otherwise, I believe that the program should preserve them and use whatever method is available in order to avoid data loss.
But the best part is that by using vertex groups we are not stuck to defining materials for grouping, the only other semi-working alternative that was available. Materials could be used except that they made a poor choice because the exporter re-writes the material names and because of the infamous 16 material limit in Blender.

So, now you can create a new piece of clothing using the excellent Retopo tool in Blender, highlight the vertices , assign them a group using the same names of the bone rig, save the OBJ and it's ready for rigging in Studio with the Skeleton Setup Tool. It works like a charm. 
Give me a few days to make the tutorial and I'll post more infos in this forum.

Paolo

https://www.preta3d.com
FB: https://www.facebook.com/RealityPlugIn
Tw: @preta3d
G+: https://plus.google.com/106625816153304163119
The Reality Gallery: https://reality-plug-in.deviantart.com