As it relates to the UV reflection, I would agree that I have rarely had a deer "pick me off" when not moving, but turkeys and geese on the other hand.
I once had a small flock of Toms bust me from 60 yards when I was sitting in a treestand. The funny thing was, I did not have a license and I saw them coming from well over a 100 yards. I am sitting stone solid but when they hit an opening, they busted me. I had no foreground cover but had a cluster of large trunked trees to my back. Same trail, this time deer, never even batted an eyelash.
I bought some of the UV Killer, applied it and a week later had an entire flock of birds literally all around my stand. Not so much as a putt.
Coincidence, I think not! Same time, same year, same untreated camo but this time goose hunting. Early season, opening day (dumb birds), well scouted field. First group coming in, start to set their landing gear down only to flare at 100 yardsish. My partner accuses me of moving, but I hadn't. The next week, wiser birds, similiar setup, birds came right to the decoys, game over.
I am sold! At least with the birds UV vision.
Hunting the Michigan Thumbs agricultural mecca...farm country bucks taste the best.