I just got the eBay lights in the mail and despite my concerns about lack of quality I'm fairly impressed.

They are full metal construction with o-rings and seemingly water resistant switches. The lens is an actual lens which focuses the beam so there are no hot spots...the optics are not flawless but it gets the job done. The instructions rate the white light at 60 lumens...pretty good.

There are 10 modes (7 colors, 2 sequenced modes which scroll through the colors, and a sleep mode)...all colors are bright enough to use during the day as long as it's not too bright out.

I might get a chance to try it out on a Mantracking exercise next week...in the meantime I'll try to take some action shot pictures or a short video.