Do you have a link to a guide for this or more info? This is really interesting.
My main desktop is dual booted but I never really boot into Linux since I often game, although I really prefer Linux interface+desktop. If Windows could be a kvm guest and GPU passthrough worked I would def go with that option.
edit: I found this which seems to give a good overview but I'm still curious if you have any tips/hacks for getting it working.