those .vrscene can be purchased at Maxtree for example.
Simple but very crucial workflow point.
Without this possibility (of scattering), Rhino users (like me) need to dowload fbx versions instead, and set all texture maps and setting propoerly for each species used.
In vrscene objects provided though (every material is already set and vrscene are ready to use).
Submitted on AHA Ideas (VRHINO-I-46).
this idea has also been suggested here 
Submitted on AHA Ideas.
AHA Ideas status: Pending.
Set during AHA Ideas to Discourse migration.
This is a V-Ray Core limitation which can’t be easily avoided.
Would you accept being able to scatter only the geometry and materials from the vrscene, ignoring things like Clippers, Enmesh, Fur, etc ?
If so, there might be a way to make progress here.
This would be super useful! i use vrscenes as a main way of doing vegetation, and currently Rhino Nature plugin is the only way to scatter them efficiently. In my case a toggle (like the for lights or ovverride material) on the vrscene instance to make it “geometry only” would be perfect.