It should be possible to pack and manipulate the UVs of a Nurbs render mesh? Actually there was a prototype of this in Rhino for over one year already. Not as full-featured as a polygon mesh unwrapper, but showed some good potential. It is planned to have true unwrapping in Rhino 5. Any chance that a copy/paste could preserve Rhino's mapping coords in MoI? Or that data is lost when MoI creates it's own display mesh?

@ Will - use a curve grid to split the objects, then join together before exporting at very low resolution...

jonah