Indeed, and likewise for other external Amiga keyboards. You don't happen to know if someone already did this, do you? I used my A2000 keyboards for years at work with Catweasel cards, but nowadays there is no ISA nor PCI to plug them into, so a USB adapter would be perfect 
Besides using it in my own microswitch projects I have only seen it used for IBM Model M keyboards, I myself have a few Model M keyboards and will probably make ony for them myself. I have thought of making one for one of my spare A1200 keyboards also, but I do not have any big box amiga keyboards :/ But most projects are on hold until i'm done rebuilding my workshop/garage (slow but steady progress).
