Tool-free switch swapping turned hot-swap PCBs into the default spec across the hobby, and the default is earned. Here is the honest, specific list of what a socket costs against a soldered joint — and the two cases where soldering is still the right call.
A split board is two keyboards that happen to share a keymap. Most builders still buy parts for it like it's one — matching switches, ordering a single sculpted keycap set, and never touching the left half's tuning differently from the right's.
Most first custom keyboards aren't built from loose parts and aren't bought finished — they're a barebones kit, a case-plate-PCB bundle that leaves the rest of the decision to the buyer. Here's how to make that decision without guessing.