I've got the Garmin Oregon 450 mounted to the handlebar using a RAM mount. I still need to do the hard-wire setup so it's not running on battery all the time (the plan is to do the wiring when I install the SW Motech crashbars next week).
So far, no complaints about it. I've downloaded maps for Utah, Nevada, Idaho, Montana, and California, as well as purchased the navigation software or whatever the hell it is so I can get directions and use it when I'm on vacation.
People should not be afraid of their governments. Governments should be afraid of their people.