I reckon you need an in house guitar tech chaps, testing these out in the real world.
I've just tried to fix my PF to my board and the velcro will not stick to that foam rubber so I had to remove it which is a real shame. I've managed to preserve it and stick it to some clear acetate to keep the glue fresh but you really do have to think these details through better. Shallow rubber feet would still allow space for velcro to stick to the metal and provided the feet are shallow enough the velcro will still work.
Still wanting patch names, not going to let up on you !!!