Mike,
I have three of his pads, an all black one, a black/white one and an orange pad. They all are really thick and have seem to be of a two piece construction (actually two pads) with a plastic disk in the middle. The quick release adapter does not even make it to the middle of the pad. Litterally I can take the all black pad (the softest one) and push all the way down on it and the adapter would not hit my paint.
It is a really good system, much better than velcro. The black/white pad is a must have.