Ah, yes on the first count at least, though that criteria wasn’t on your bulleted list, I guess it was in the title.
That being said, UV breakdown might not be as concerning in the short term if the substance is removed fairly often. I wonder if a clear gelatin or glycerin layer would last long enough?
I’ve also seen resin-infused paper-like substrate layers of material like carbon fiber attempt to bypass the requirement of an FEP. Each print layer was a new sheet and once the print was done the un-cured material was blown away.