The physics of the fibers used to make the weave still does not change. It's the way the light hits the fibers and the cross reflection associated with it due, in part, to the shape of the fibers. You cannot change that part. In addition, no weave is perfectly straight resulting in differences in reflected light. Further, since the strands are not straight nor perfectly cyclindrical, you'll have variances in reflected material adhereing to the fibers itself. If they don't apply the reflective material until after the screens are manufactured, then you could have overspray resulting in closed gaps of the weave affecting the transparency. Vinyl screens do not have any of these issues...except if the reflective material was not uniformly applied...but this can be seen upon receipt and inspection. In addition, I had a very good friend who did testing on a lot of material independently. There was one leading brand of weave screen who leaned and relied heavily on cyan to increase it's apparent light reflectivity since green comprises roughly 2/3 of the luminance equation. Won't mention which one it is, but it's one everyone has heard of. Bottom line is, a weave manufacturer may have to manipulate things to get it to work, which often adversly affects something else, or to increase its marketibility. You need to ask yourself why commercial theaters don't use weaves...nor IMAX. Why should we use them in home theaters then? Don't believe the hype or marketing. Prove it to yourself. Do the testing yourself. To quote a famous Jedi Knight, "Your eyes can deceive you. Don't trust them!"