[RAF_OldBuzzard]

While I can't address the keyboard, I can tell you that I have been using 2 'meeses' for some time now. One is an MX Revolution, and the other is an MX 620. The wife doesn't like the Revolution, so she got the 620 to use. One day I forgot to unplug the 620 when I plugged in my Revolution, and we found that they didn't conflict, so I've left them both plugged in ever since.

I'll bet that 2 keyboards will work as well. Shucks, plug in 2 and see what happens.