Drove around with it at dusk and dark yesterday (getting darker earlier now)...
Was super bright and very clear, some ghosting, but i dont care for adding the rectangular reflecive film on my windscreen (but it does work). So bright in fact, that when i got home, i enabled the auto brightness mode in the setup. Which is also pretty easy once you run through its 8 modes and get the hang of it.
Its also an attention grabber, so be ready for it. Remember to only look at gauges for brief times as you scan data and keep SA. Not having to look down for speed is its main purpose, and this does that well.
Oh, and it uses a 12v cigarette lighter sized power plug. I think you could swap it for a standard USB power chord with a mini/micro-USB jack on it. Again, the only complaint i have is only the speed (white) is visible in direct So Cal sunshine. Too bad the sections didnt have color choices. Overall, it works for me and is a keeper until i upgrade to an expensive unit (which is risky on a bike).
Enjoy