YUP! I got mine back from the rugger's setup and I now use it with a KVM to switch between HP_Mini/22"1080p and any three other Macs. The 466DA is a PITA about using anything switched except the video, but the ADB Macs just love the wireless KBD/Mouse and the 1080p centers/renders whatever the old macs throw at it (@60Hz) to fill the screen top to bottom at the proper aspect ratio.
When I was looking at doing multiple KBD Hacking, my approach was to use a standard KBD switch matrix output as the input for EPROMs translation to the Matrix inputs for several different KBD controllers attached to the different systems and acting as those "emulators" missing from my current KVMs.
That ought to be easy to do over serial with the new PIC toys available.