Hi there …
you already can print 2 overlaying viewports. One below as rendered view and one above as vector print … the fills are still missing in the vector view … but there should be some kind of changes to that in Rhino 7 following this thread where the issues around clipping plane fills have been discussed at lengths … actually, I did ask for the same features a few years ago … this topic isn’t really a new one:
Don’t forget to also check VisualARQ … they seem to have found a solution for hatched and interactive fills.
Have a nice day, anyway
Ante