When I saw it at CES, the screen did not have a glossy look... it resembled the 1.3 gain sample they had there more than anything. I heard numbers like 0.6 gain at the dark end 0.85 at the bright end, I'm not sure if the 0.6 gain also indicates the colour of paint they were using or if it is just the value Don Stewart posted earlier in his post on testing methodology. I did however see the bright sparkles that some testers commented on, not in all cases though (actually only in the Yamaha demo, if memory serves), I can't explain why. Although, I did notice higher reflectance bits on the 1.3 gain samples they had there that matched similar bits on the Greyhawk they had hanging on the wall. Could these be related? Why don't I notice similar "sparkles" on 1.3 gain Stewart screens? In any case I didn't find them to objectionable, but they did appear to be in-line with light reflected from the projector.
As someone mentioned before, Don stated that the half angle was 70 degrees. Definitely not characteristic of a high gain screen...might a higher gain version with a smaller half angle be possible? That would increase ambient light rejection (although to a smaller degree) and it would raise screen brightness.