I recently caught sight of this & am a bit stunned.
It's been a long time since I wanted a new guitar (much less something as expensive as these) but...

Has anyone played one of these ?
Are there any potential problems that don't seem apparent ?

guitar version (there's also an acoustic guitar version!)
bluesrock
http://video.google.com/videoplay?docid=-262172148173608189
semi-jazz
http://video.google.com/videoplay?docid=125741718547399465

electric bass version
http://www.youtube.com/watch?v=8CBt_FAaup4

acoustic bass version
http://www.youtube.com/watch?v=le2W5oeKtYE

close up of non-deployed frets
http://mikeyguitar.com/images/photos.asp?ph=11_2_800.jpg
close up of deployed frets
http://mikeyguitar.com/images/photos.asp?ph=11_3_800.jpg

FWIW, here's the company site
http://mikeyguitar.com/
& their FAQ
http://mikeyguitar.com/faq.asp