I have a VX80. I use it with Mountan Lion 10.8.3. Seems to work just fine, however the company is the worst ever with NO SUPPORT FOR ANYTHING. CANCELLED FORUM (DUE TO SO MANY COMPLIANTS), AND NO UPDATES. THEY REALLY ARE THE MOST HORRIBLE COMPANY I'VE EVER HEARD OF.
The keybaord has a great feel, but If you can get rid of the keyboard, DO SO!!!
Mine seems to work just fine, but there will never be updates or support for the VX80 keyboard. I must say I love the action of the VX80. What a great concept... BUT REALLY REALLY BAD COMPANY... or should I say... NO EXISTANT COMPANY.