I am using an IOgear 2 port USB kvm ( model GCS42UW6) with my k95 and it appears to be working, but I had to use both ports for the 2 USB plugs on the keyboard. I have one mouse plugged into my gaming PC and use a Bluetooth mouse for the laptop. So far, everything seems to be working ok.
I was also think of runing a pair of these to get my good mouse usable on both systems, just have one of the KB USBs plugged into each kvm and swith both: clicking 2 buttons isn't really that big of a hassle.