I do a lot of uvmapping, but only for Poser models really, where the uvmapping is important. lately I am doing a lot of very complex procedural shaders in Carrara, that are much more complicated than any uvmapping I have done (for crystal, gemstones, metals, etc) and I never bother to uvmap items using those shaders unless I'm going to import it to Poser. I use Carrara to generate decent reflecton mapping and textures for transparent objects in Poser too. Works very well.