Wow. You ARE way behind in that respect, having luxuriated for the last year in front of your S-I-L-V-E-R. Both PB_Maxxx and Tiddler both have had successes with painting Roll Ups, and the Tidd did it with a roller no less!
If I were to attempt that route I'd seek out a rubberized rollable surface and suspend the SM in a clear translucent rubber cement. Better yet, I research how manufacturers create their roll-up screens and work on a sprayable rubbery translucent SM solution for the topcoat. Now there's an ambitious project.
Crazy stuff that. but "crazy" is another acronym for DIY in many minds anyway. Bruce can's "Roof paint" follows something along those lines, but it goes on pretty thick, so there's that to consider.
I cannot elaborate on several advances recently made by "people' in the "flexible material" realm, but at least on this Board there are the previous examples that exist to refute your declaration of "Don't go there with Paint". As for the S-I-L-V-E-R itself being used in that application, the Faux Glaze is applied so very thinly, and itself retains a rubbery consistency (...although it exhibits a definite toughness to that aspect, not a tendency to peel...) that you can consider the use of it for a flexible coating on Roll Ups a done deal. Touche'.
(awwww, why can't I type faster. When Tiddlers' on deck, I can't ever respond fast enough.
Peck, peck, peck, peck, peck, peck, peck, peck, peck, peck, peck, peck, peck,............ )