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?
I don’t think there are really any major downsides to uniform profile keycaps, it’s ultimately mostly preference. The only thing that might cause issues could be the homing j and f keys if you only get a set that supports QWERTY. But that’s a much smaller problem than not being able to rearrange the caps at all due to a sculpted profile. Blanks are a good option, and forces you to learn your new layout without looking at the keyboard, but I understand the appeal of having that available to speed up the learning process and commit it to muscle memory.