Dumb question, but why not have poser or DS use a sphere mapping system to give you a begininng weight map?  Auto convert it over.  That would allow you to at least have a starting point.  Maybe include a 3d painting option for your weight map and you're good to go. 

Or you can import a 3d mesh for some boolean weight mapping.

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)