1. Vibration: If the bars vibrate, the mirrors are going to vibrate too..no way around it. Mine do it too, and it is no bother to me. If I want to see a clear view of what is behind me, I hold the mirror for the second I look. Easy peasy.
2. Hey Ned..not sure if it was mentioned or not( only looked 1 page back), but did you see the Ned Bayly Ride to Peru series?? The BMW's they were training on, were all outfitted with your mirrors. Pretty fricken cool, huh??
Again, as far as I am concerned, great concept for a mirror.