Even though I have been taking it as a fact until now, I realised that NURBS and SubD are not back and forth compatible. For example, when a SubD surface (with extraordinary points) is converted to NURBS, the final surface is an approximation of the first, not an identical.
I guess this is because of the underlying maths of SubD, which -I guess again- is not compatible with NURBS (or maybe it is up to a point). Why is that? Do McNeel plan to make it 100% compatible, meaning that when one converts the SubD surface to NURBS they get an identical surface or object?
Thanks a lot