They're pretty ok, I think a bit heavier than black alps, impossible not to bottom out, just like black alps.
But the keyboard doesn't work (I've tried PS/2 and a PS/2 to usb active converter), so I can't test it in real conditions.
After a quick glance at the oscilloscope and behavior after connecting power (num lock diode can be switched without connecting to the computer) I'd say it may be XT. Maybe I'll try to run it later;). I'm currently doing the
GH60 and two other hardware projects, so it'll have to wait.