I used to enjoy working with Maxwell’s Rhino plugin.
Being able to remain in my modeling environment was the best choice for me since Rendering was only a peripheral activity.
Over one year ago, I updated to Maxwell 4 only to realize it wasn’t compatible with Rhino 6 yet.
I had to wait many months for the new “plug-in” which had nothing to do with the previous one.
It had become a very minimalistic (and bug-ridden) integration.
Now, I am prodded by the Maxwell sales team to upgrade yet again to “Maxwell 5” which, apart from new icons doesn’t seem to bring anything interesting on the table, for me at least.
I just tried running the “Fire” rendered viewport, just to crash instantly.
Then , I remembered “Fryrender” from the old days, who also used to have a nice Rhino integration, just to find that they are now “Arion render” , or “Maverick”, with two variants : one for “CAD” and one for “CG artists”, whatever that means… but no more Rhino integration !
So now, suppose you want to make changes to your model in Rhino, and re-render, you’ll need to re-export geometry, re-assign materials, etc…
I see it as a sign of Rhino’s demise that render engines don’t bother to develop proper plug-ins anymore.