im checking it out right now, installed the "blackberry verizon 8900" verison, i know verizon doesnt have a 8900 but its an option to select, and it has the same screen res as the tour, and its not a touch screen.
i'll test it on my drive home and post the results/review
The lock to my location didn't take too long, and the the voice prompts were loud, and the location seemed to be accurate.
the voice prompts seemed to stop working halfway through my trip, I revived a couple BBM's and switching between amaze and BBM may have cause the issue, or it could have just been user error (*gasp*)
Also the menu system doesn't use the normal menu and back buttons, but rather the # and @ keys.
Over all its a pretty nice app, could be a little more polished, and incorporate the normal menu buttons. but I would recommend it as a free GPS navigation program.