This light has failed to garner nothing but amazement. I hear "that's a bright light!" all the time from pedestrians, all my friends want one, I've been stopped by a couple of other cyclists wanting to know what kind of light it is and a bike cop caught up to me and wanted to know what kind of light it is because he wanted one
The coolest thing though is the compliance rate from automotive traffic. It's an attention grabber. Even during the day I'll leave it on flash a lot and cars coming around curves immediately slow down and cars on side streets rarely try to jump out in front of me.