Yeah good question, the plates are super stiff . If you force it down ( like standing on it ) on a concave or convex bottom the standard plate could delam your board. They bought out a new mount which is spilt down the middle to let the plate flex (see attached pic). The plate is still pretty stiff so if you can't push it on with your hands (before you peel the tape) don't fit it. They really do stick like sh!t to a blanket and won't let go but if you force it onto a deep concave or double concave or Vee it could pull the glass. If that's the case just lay up some glass to make it flat. They work best on production boards and not customs with single layer 6 oz or less on the bottom.
I'm the dude and you can peel them off and buy some more tape and re-apply them , good way to test on different boards