For my first ergo split keyboard im waiting for the release of the keeb.io Iris rev 8. I am planing to experiment with layouts and will be moving my key caps around a lot. Therefore should I be looking for flat profile caps like XDA, DSA and KAM or are there any big downsides to them?

Currently I am using a Keychron K3, could I use the low profile keycaps on the Iris?