Hi Felix,

> Out of curiosity, to your knowledge, is the route from SubD to NURBS
> somewhat more efficient?

It is, but going in that direction is a relatively new area of tech and it's not very common yet.

But there are 2 tools that can move things in that direction - either the T-Splines plug-in for Rhino (http://www.tsplines.com/) or the Power SubD-NURBS plugin for Modo (http://www.luxology.com/store/Power_SubD-NURBS/) can convert a SubD control cage to smoothed NURBS surfaces.

- Michael