Just an update, as it is rolling up on two years since I got this flashlight. It still works great, the battery (a CR123) lasts a long time (I think I've replaced it once, twice at the most) and with the exception of a few small scratches (I'm tough on it), it looks new.
I've also picked out a couple iNova 24/7s, which are very versatile. I keep one in the Jeep and another attached to the outside of my daily bug out bag (along with the above iTP SC1 Eluma). I like the different options, from low to bright white light, red light (again, for night vision), an SOS flash, a multi-colored strobe and a slow, alternating two-color flash. There is also a very slow, dim flash mode so you can use it to mark a location in very dark conditions. Good shit!
Cheers! M2