I'm mostly using my plate as housing for Maschine Mk3 in studio.
The plate is great at keeping the Maschine steady during performance. The plate also does a great job at shock absorbing and protecting my desk when hammering the pads particularly hard. As for cons, its quite big and might take up more space than its worth if your workspace is on the smaller side.
I intend to use it for live performance at some stage, and I suspect it will be most useful there.