Over the holidays I've made some progress automating the Poser-based solution FVerbaas described. I can't call it Poser-only anymore because I use a stand-alone Python script to create a transfer object from the two versions of the original geometry. Load that into Poser, load the textures, do a bit of extra fiddling (some of which I can also delegate to the script to make things easier) and render the different texture tiles one by one. The image shows one of BlueEcho's textures for the AntoniaA UV sets converted to the standard UVs.

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