After deciding that blender is far too slow / inefficient for texture painting, I've been looking at alternatives. I couldn't even get many of the other apps to run on my lowly PC, as an Intel HD 3000 was not good enough for them.So it typical 'do everything yourself' mode, I decided to write my own. It has taken about a week so far, on and off, so I consider it a good investment in time as it should make asset creation much faster.