To anyone in this thread who inquired about edge softening specifically in Enscape for Rhino, this should now be fully working actually with Rhino 7 and Enscape 3.5:
We're able to make use of this functionality now as well since we've entirely restructured the Rhino geometry export and live updates, taking advantage of their new Api.
Waiting for IES Support, After the partnership with chaos Does Vray IES in Rhino would Work in Enscape ? Demian Gutberlet