I think Dan is trying to get some XPS foam in AUS, so the idea of XPS Tomo models is not totally out of the question, just having them produced by XTR seems to be.
I wonder if poly is too brittle to make a stringerless PU model?
Otherwise, I think I prefer EPS/Epoxy for sure.
As far as the new Revo, it looks very interesting! There is a podcast on the Firewire "The Wire" from 2017 and Chris Grow asks Tomo about the step up model he created for Peter Mel and Tomo describes the V Quad Concave (VQC) bottom hull. He says, he added "a quad inside V bottom, so, I had a V -- I have a deep V running all the way through the board -- then, put like a multiple concave through a V, so it almost -- in a very basic sense looks like a jet ski hull."
There was a sample on display at Camp Shred and it looks identical to his QISC. You only notice the difference if you look closely, and then you see it has a subtle V instead of a concave.