1. Great idea!
This is one of the best ideas ever, and it is executed to near perfection. One shield for both day and night -- how could it miss, right? The only drawback (well, other than the price, which is a bit stiff), is that it takes five to ten seconds to lighten when you go into a tunnel or other dark area, which entails raising the shield for a bit for safety. Otherwise, I completely endorse this shield. I have five Bell helmets at the moment, and have used Transitions shields on all of them. Highly recommend to anyone with a compatible helmet.