Hi norbert_geelen and all,
Sorry for any delay of my response.
We currently plan that, after completing the next release of our XN Kernel, which powers XNurbs software, we would spend a couple of months to complete the plugin development for Rhino. This plugin will have the same capacity as our SolidWorks plugin, but should be 5x – 10x faster than SolidWorks plugin. So it would take a while.
Here is some good news: We just release XNurbs V1.02, which fix all known issues reported (All issues are minor issues.) We are making a Christmas Special of XNurbs software at the price of 95 USD. Even Rhino users can afford the price