Workaround → binding function, but it could be nice if the texture would be automatic shown per default.
Hello @Micha
Thank you for the feedback and for the suggestion! I understand that while we have the Interactive render and an option to accurately display the applied materials (even in the viewport itself), in some scenarios, the Binding function might be the workflow, which is more suitable for the task at hand.
As an experienced V-Ray for Rhino user, could you please provide us with a more in-depth description of how you would like to see this option implemented? For example, should the Diffuse be linked by default? Any sort of feedback regarding this topic would be greatly appreciated.
Yes, that would be fine. I know, it’s not important, but it could be a nice addition. 
The synchronization between V-Ray Emissive and Rhino self-illumination materials will be improved.A ticket with possible solution is now logged.
Thank you!