ptex
3D Coat/Blender notes: Getting ptex textures from 3d Coat to Blender
Wednesday, 12 October 2016 @ 8:47pm
tl;dr: bake the damn things.
After painting, from the paint room go to Textures > Texture Baking Tool
Fill in the stuff on the dialogue box as appropriate (I have no idea how correct my settings are, I tend to take a best guess with anything I don’t know :P)