Not to point out the obvious, but I definitely would not try this with tubeless alloys, those just aren't meant to be removed by hand and also have to have the bead seated after. Except when it's an emergency... I've seen people use a ratchet strap around the diameter of the tire once it's on to seat it.
I scratched the exterior of my black tubed steel rim, but only when I was trying to take the second bead off and wasn't doing it right. I did though end up taking the tire off from the opposite side -- the inside of the wheel. In a tubed LR rim, there's two humps around it, and the one to the inside of the wheel is narrower, so in theory when that second bead is wrapped around the diameter of the wheel, the narrower side should be a little easier to get it around. If I do another maybe can post a video (carefully edited to make it look easy and without all the profanity...).
I had a flat on this wheel, but the plan is to remove all the tires, get them bead or sandblasted, and repainted... some rust on the inside of them and would prefer to go back to the standard LR white.