Anyone tried this yet?

http://gaugeface.com/

I am a bit of a tech nut, that does look good

how will the vibrations of the Harley affect the device?
should I install a set of Apes to accommodate the size of my I-Pad?

I used to mount my Samsung phone in the same spot (only for GPS and music) and never had 1 issue with vibrations, I'd be more worried about it getting wet though.

Another cheaper Android option is the free Harley Droid app, used with a bluetooth OBD dongle.

http://www.appszoom.com/android_applications/sports/harleydroid_qoos.html

Or

http://www.appszoom.com/android_applications/transportation/portable-dashboard_bbnpd.html