I have owned and carried an E01 since April of last year. I have carried and used it 24/7, and am on my third battery (I use E2 Lithiums). I showed it to my boss and he had to have one, as well. Once he received it, he retired his previous EDC (an Inova X1) to his glove box in his truck, and he uses his E01 daily, as well. Nether have ever failed, altho, the ano has worn quite thin in most places (I have the black one, also). I cleaned and lubed the heads on both, and it is a snap to operate either one one handed. I also own an LD01 stainless, and tho the extra Lumens are very handy at times, the ease of operation with the E01 has spoiled me rotten. It has gotten where it annoys me to have to turn the head on my LD01 twice to turn the light on in low, so, when I do need the extra light, I just operate it in the medium setting, which is where the LD01 defaults to after being turned off for more that a second and a half. A redesign of the interface on the LD01 would be perfect for my application, but we are all different, so until that happens, I will be perfectly happy to "wear out" my E01, and then buy a new one. In fact, I like it so well, I have given them to my Dad, daughter, and son, and they all find it hard to separate from them. I suppose one could call us "E01 Junkies". Tho I have other, much brighter lights, for some reason, the E01 gets the call more than all the others. It's just too handy to give it up!
