The biggest issue is that the sockets were never really designed to be for enthusiasts changing switches all the time. They were designed for the factories to have multiple versions to sell with minimal retooling. If you are extremely diligent with removing the solder from the legs of the switches and keeping them straight, then yes, there’s nothing to prevent this from working. However, a little blob here and there will make it much more likely that you tear a pad when inserting the switch into the GMMK, and also more likely that the socket will be slightly deformed and never work quite right with any other switch.