I picked one up a few weeks ago out of curiosity. Actually, I asked someone about it, and they bought it for me. I'll have to use tools to get it apart, as it appears they used thread locker on the head. The first seam I can find is 30mm from the front of the bezel.
The battery compartment is 137.5mm long with an inner diameter of 17.2mm. The switch is a forward clicky, but the logic is in the head of the flashlight. With the tail cap off, you can jump the battery contact to the body and cycle through the modes as if the tail switch was present. Emitter appears to be a 4 die unit (you can see the x if you hold it close to a surface on low brightness), but is a slightly cooler temperature than the Cree XHP50. Runtime is supposed to be two hours on high (2000L peak), and 15 hours on low (200L). I've had a it a few weeks on the original set of CR123's, and with the batteries down to 2.77 volts each, it seems to be putting out about 1,800L.
The lens has a very light orange peel surface (see photo below), but the reflector is deep and has a more concentrated beam than expected. Hotspot is small with a large corona and a moderate sidespill, and the throw is good despite the frosted lens. I would say it's good for camping or search, but not for tactical unless you use it as a club. The hotspot is so intense that you lose your peripheral vision, and there is no direct to any mode except the one that is AFTER the last one used. Tail switch is loud, there is no low mode, and the balance point when holding it in your hand is with your fingers actually on the back fins of the head. If I was in a tactical situation, I'd rather have my EC4S as main with my beat-up Energizer 185L light as backup...