I don't have any details, but there's a prototype McE2S switch for C/M bodies that you could use, or you could slap a KL3 on an Aleph body/tailcap using an E>C adaptor. You can also buy or build an Aleph in whatever configuration you want and slap in a collimator lens. Otherwise, LED heads with a wide reflector might give you what you want (Aleph 3) on their own. (Yeah, you can see I'm a fan of the Aleph series. Head to the McGizmo sub-forum and learn, if you haven't already.)
Other options aside, you could just choose the stock KL3 on stock C/M body option and simply carry a good keychain-size light, perhaps with a lanyard for convenience. I love my Arc-AAA; there are other excellent options as well. The thing is, low-output, highly-focused lights have few applications; up close the spot is too small to be good for general use, and from a distance there just isn't enough light for anything other than signalling.