I've seen g80-11900 boards (MX switches)
g81 keyboards typically have MY switches (but accept MX keycaps)
But I also had 2 keyboards made by keysource international (rebranded cherry g81 boards) - and they had vintage black MX switches. Still scratching my head on that one...
People tend to snatch up the g81 boards w/ black keycaps for harvesting.
I like the touchpads for fall-back, but wish the buttons were more durable.
If your buttons break (touchpad), you can fix them using a thin sheet of ABS (talk to anyone with a 3d printer) and some ABS slurry (glue made with scrap ABS disolved into acetone).
Paul (HB)