I assume that the clip would interfere with the plate, so if we shave it off it might fit well?
but to shave that amount of clip....
Problem is the clip grips where the plate goes, so if you shave it down it won't stay on any more. I think they're a nice idea, poor implementation. What I mean is that the kind of person who'd buy them would more than likely have a plate mounted board.
Not to mention they only work well with Cherry profile keycaps that have low crossbars. DCS, DSA, SA and some OEM profiles, for instance, would bottom out just as hard as without them. Poor implementation.