I installed custom keyswitches in my Reform. I ordered it with Kailh Choc White CPG135001D03 clicky switches but received standard Brown CPG135001D02 switches. I ended up ordering White switches from LCSC and did a DIY replacement with the help of a friend that has much more soldering experience.
Since I did not have a bare keyboard PCB, we started by desoldering the old switches. Unfortunately a trace was lifted during the desoldering process:
Luckily the trace was still intact and could be repaired using UV green: (image moved to reply due to embedded media limitation)
After soldering the new switches, I now have a Reform with clicky mechanical switches: (image moved to reply due to embedded media limitation)
The process was worth it for me. There is definitely a risk in lifting and damaging traces. It would be nice to see the official keyboard offered with different switches or at least as a bare PCB without any switches, which would make installing your own switches much easier.