@Jbshorty
"It's really just a browser that hooks up to Rhino's object material properties."

I know. I follow auxpecker blog from a long time
I said "Maybe speak to auxpecker coder because he has very very good environement maps pictures that he use in Auxpecker."
Because its not easy to model good environements for rendering env maps. Its better to ask someone who has already made a lot
of very good renders of environements. Maybe Michael doesn't have time to do a lot of them.

"V5's real-time shadows"

There's some videos on youtube that ive already seen, but I dont find it usefull for helping modelling.
Its good to show the model to the client but usually we have time to do renders.
Real time ambient occlusion like SSAO in video games would be better than real time shadows.

But I didn't know about BlackBird RT, the video look very good :)