I wanted to have my AMS Lite above my A1, but not attached to the unit.
I have a french cleat wall on the worbench, so I built an adapter to replace the AMS Top Mount Lower Half.

It slides onto 12mm material (~ ½ inch), although you may want something in between the mount and the self to tighten up the grip, depending on the actual thickness of your shelf. I used some felt to increase the snugness.