I have both and use both and each have their advantages over the other. For raw brightness and throw the dorcy is the winner, the momentary feature is very useful also. The uke 2AAA eled has its advantages also, waterproofness and ruggedness plus its magnified beam gives a sort of odd but even large version of a #222 bulb light beam but it is noticeably dimmer than the dorcy. The run time of the uke is perhaps 3-4 times as much in the useful light category I think and also I have carried both in my pocket and prefer to edc the uke for a few reasons: I have two pocket knives in my pocket and the dorcy made for a lot more noise, also unless you bend or crimp the threads on the tail cap on the dorcy a little, it sometimes would completely unscrew in your pocket and you would have a 3 piece light while the uke never budges. If the dorcy didn't have a lot of artifacts, bluish blotches etc its beam would win hands down due to its brightness, but at times on a white background the dorcy is a little annoying for that compared to the dimmer uke.
For close up stuff and in pitch dark areas the uke shines, for farther away stuff and some background light the dorcy pushes the uke aside. I find the beam of the uke useful to about ~10-25 feet, with the dorcy useful to perhaps ~20-35 feet or so. I have used the uke's clip on a ballcap also, it is actually useful if you don't mind wearing a cap to use it that way, I have never used the keyring option I find it a little clunky they need a different keyring or one with a swivel on it I think.
I have thought about buying a second eled module and see if I can mod it to overdrive the led more or something.