Not to go too much off topic by concentrating on just one modeling application, here's what I think is a pretty common kind of workflow for making multi-actor morphs for Poser:

0. export an .obj file from Poser (or use the original .obj file wherever that's feasible)
1. remove all grouping information (e.g. via UVMapper)
2. import into application of choice, sculpt, and export
   3) restore vertex ordering if necessary (e.g. via kawecki's Morpher)
   4) restore grouping information (e.g. via UVMapper)
   5) feed the result into some application or plugin that computes the deltas and creates the morphs for each actor (e.g. colorcurvature's new morph loader that this thread is about)

I'm assuming that most of us will only have experience with one or two modelers, and optimized our workflows for those. But maybe it would be useful to identify one that works pretty much independently of the modeler (if such a beast exists) and that colorcurvature could then use as a reference, concentrate on in testing and recommend to novices who are planning to use his tool.

Just my $0.02.

-- I'm not mad at you, just Westphalian.