I got the light, but have not used it yet. I kinda wish I had gotten one with only 3 LEDs instead of 5 just for battery life. I will likely use this one most of the time on low or medium brightness though, so it may not be an issue. One thing I was a little surprised about is that low and medium actually dims all 5 LEDs instead of turning off some of them.
Our club only rides at night at full moon, so it'll be another week or two before I can try it. I may have to go out for a short night ride by myself beforehand just to check it out