Hello 3image.

I'm sorry but I have to disagree.
The current Rhino's implementation of Cycles it's absolutely not comparable with the counterpart that we have in Blender.
I can say this because I have both Rhino V5 for some years and I've tested for several months the version V6 WIP (all the latest builds) of Rhino.
The implementation of Cycles in Rhino it's "only a shadow" compared to the full and very powerful Cycles engine that you have in Blender.

Regards.