Hi Chris, I think you're asking about the "Drape" command in Rhino?

That method doesn't really give very good quality results, there is usually a lot of "stair stepping" kind of artifacts.

For that type of surface reconstruction it would probably be a lot better to convert to polygons, then use a polygon retopology tool to generate quad polygons over it and then bring that back in to MoI using the SubD converter. That would give you a lot more predictable quality than drape.

- Michael