Downloaded a trial copy of Sculptris and made a crude image, then noticed the 'Paint" button at top of screen. Clicked it, and pressed 'OK' to build mapping and after a moment
it presented me with additional options to "Save TexMap" "Open Texmap" "Save normals" "Save Bumps" "Export PSD" and Import PSD. Played with that for a bit and verified it did export
texture maps, bump maps, normals and PSD (paint shop) images. From what I can gather reading Sculptris documentation, Sculptris seems like a good way to get a project started,
then finished off in another graphics package such as zbrush (which I am totally unfamiliar with) . Hope that is helpful information.