@Jeff:
It should work like a charm. Even if the KVM is an old mechanical one it should work as the Lyra I got here doesnt seem to object if I disconnect and connect the PS/2 kb while running.
KVM was actually the reason for me getting a PS/2 adapter... wouldnt mind using the Amiga-kb otherwise, but it is a pain in the ass to exchange keyboards on the desk.
/Patrik