Give me an example of a texture and i'll give it a go. Most things modelled in MoI, i.e large sweeping surfaces tend to map fine, but once the fillets get added and other features that suddenly change the density of the mesh generated to keep things smooth is where NURBs really falls down from a rendering perspective. Simple materials and textures still do fine though, such as plastics, metals, paints etc. Simple bump maps like sand, moldtech and scratches all seem to map well. But things like woven cloth with pattern would most probably still be a nightmare.

Martin