Exactly. Btw you can always look at the PCB and count the numbers of holes for each switch. On most kustom boards there're 5 holes which means you can use plate mounted switches to build your keyboards with plate, or choose PCB mounted ones just leave out the plate. But for those boards with only 3 holes for each switch, Plate mounted switche is the only choice. As you would guess, the extra 2 holes is designed to improve stability of non-plate keyboards.