I will also put myself in the "severe skepticism" group.
I can't comment on brightness vs time stuff because I don't have a good sense of what variables affect the efficiency of lights.
But on a weapons light, as far as I am concerned, a switch should do one thing, or two TOPS:
1) momentary on
2) some separate motion that cannot possibly be accidentally employed for constant-on.
And I don't even really want the second one.
This light could be a great light in the sense that it is indestructible, lightweight, and attaches like a pit-bull/divorce lawyer cross. But the switch makes me think that the designers have not thought this through. It sounds like your usual run of the mill cheap chinese flashlight switch approach.
And while I have no specific loyalty to Surefire and I increasingly suspect other companies can build lights that are every bit as good, in order for me to want one, the features have to actually make sense.
Full disclosure: I'm the editor of Calibre Magazine, which is Canada's gun magazine. In the past I've done consulting work for different manufacturers and OEM suppliers, but not currently. M4C's disclosure policy doesn't seem to cover me but we do have advertisers, although I don't handle that side of things and in general I do not know who is paying us at any given time.
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