...Other than that this one looks like a winner to this flashaholic. I definitely like the side switch.
Can it run off a primary if the need arises?
I cannot see why it shouldn't run off a CR123 when needed. The 300 lumen high is not going to tax the capacity of a CR123. And if they did a decent job on the battery contacts (springs, pins, whatever) then there should be no problem with the 1mm difference in length between the 16340 format and the 18350 format. (You can always slip an o-ring around the CR123 to fatten it up so that it does not slide side-to-side.)
That's part of why I would like to see a lot more mini lights in 18350 format--they are backwards-compatible with the CR123 and RCR123, at least on medium and low levels (in some hot-rodded lights, the high will work on an 18350 and not on the RCR123).
With this particular light, it looks like the base of the light is at least 1 cm longer than needed for the battery-compartment, in order to accommodate the quick-release key-chain. (Look in the small photos at how big the shiny lug on the q-r is).
I hope they'll offer a second version of this light without the key-chain, and with a body that is 1 cm shorter. The package of features in the flashlight alone is very nice, and to me the key-chain and extra bulk of the body are just demerits, not attractions.
ETA: there's something else funny about these photos. Look at the screwdriver/box-opener that sticks out above the bottle-opener/1/4" hex drive.
In the top three photos, that screwdriver is quite short and sticks out maybe 3-4mm (like 1/8"). In the montage of 9 color photos below, the same screwdriver is more like 10mm long (like 3/8"). Looks like the designers may not have made up their minds yet? The longer version is *definitely* going to put the hurt on your thigh some day, as well as tearing a hole in your pocket.
