I have a Willard, one of those world war I army hat scuffers, a tip pick, sandpaper, tip tapper and yes a Kamui Gator Grip. The Kamui Gator Grip is my favorite. The "screen" is fine enough but sharp enough to put a clean extremely small dimpled pattern onto my tip which the chalk appears to hold very well. With sandpaper or other scuffers, they either have too large of teeth (putting very large holes in my not so cheap tips) or they work as a super abrasive rubbing back and forth, pushing on the glued layered tip. While I haven't had any problems with the other scuffers, I prefer the finely manicured looks that the Kamui puts on my tips. Others, at the pool hall, sometimes seek me out and ask me to scuff their tip with the Kamui Gator Grip.
I haven't tried the Wolfbite and I'm sure it works fine. I've used sandpaper, files (tip tappers) picks, knives (way back when) and scuffers like the Willard scuffer for years and I don't miscue very often. When I first started playing pool, I used to see old time players using knives to cut criss-cross, tick-tac-toe-like patterns on their tip and even tried it some myself. I put the knife away a long time ago and the tip pick (the large one) too. The large tip pick cap came off in my pocket and one day when I was searching for a coin in my tight jeans, I pulled up a bloody thumb and that was the last I saw of the large thumb-pick.
This isn't rocket science but no other scuffer provides the finely manicured surface that the Gator Grip provides. I think it removes less leather than most other scuffers and I like that as well.
If you dimple the tip then you remove no leather. Only when you abrade the leather do you remove material. Anything abrasive that is stroked across a surface with applied pressure removes material if the abrasive is harder than the surface it is working against. A scratch is the absence of material. And indentation however is molding of material. Think clay vs. stone. To make a happy face in clay you manipulate the material without removing any until it is shaped as you desire. In stone you must remove material to shape it. Thus dimpling preserves the leather and sanding removes it.
Any sandpaper with sufficient grit can be used as a dimpler. The pattern however will be much more random than if done with a machined tool. I do not think that this makes much difference but perhaps it does.
In reality the very best thing to happen to the leather tip industry was the curved sander shapers. People sanding away on their tips to shape them constantly has been a boon for the tip industry. When people get educated to the fact that a light abrasion or better still dimpling is all that is needed they will have have tips that last for years instead of months. And some give the advice to not even dimple since chalk itself is abrasive and I have found this advice works with some tips but not with all. In general I try to use chalk only and never dimple or shape the tip more than absolutely needed. The lighter the touch the better and remember to burnish.