Does anyone have access to the equipment used to performance test bats? I would LOVE for someone to get a couple of marquee name bats, test them right out of the wrapper, then have them rolled, and retested to see if there is any performance improvement. I would guess any improvement would be minimal, and you are probably (not sure how to test this) shortening the life of the bat.
I have readily available usssa compression testers that I have used many times