I like slip-on pads and have used many different makes, including the ones mentioned, and some "no-names" too. Very handy when you need more pull and don't want to whittle on the wood, or if you need to adjust the LOP to account for seasonal clothing thickness variation. I have what one of my gunsmith friends refers to as "ape-hanger arms," and often need the extra pull.
Have come to prefer the lace-on because they are easier to remove. If you hunt in crappy weather (what serious hunter doesn't?), water will accumulate under the pad and sooner or later degrade the stock finish. Been there, and learned to pull the pad after each soggy hunt and also when the gun is to go into any lengthy period of storage.
I HAVE endured many hurtful remarks from my "boon (more like "goon" actually) companions" about "butt condoms" and "sissy pads" regarding slip-on pads, but persist in the serene knowledge of my righteousness. Let them eat potato crisps and drink "frozen gnat piss," say I.