I'm not sure what all the fuss is about. The "non-Halcyon" part of the light is the canister and battery - it's a delrin canister, 1/4" thick, with only 3 possible physical failure points - the o-ring sealing the canister, the switch, which is a heavy duty one, and the point where the cord enters the lighthead,and I can't see any flaws in the contruction. I had it down to 65' on it's first dive (shallow by some standards I know), but which is still 3 ATA - surely enough pressure to show up any manufacturing defect. There was none. So what's the big deal over the canister not being a "known" product? For 95% of recreational divers, Halcyon isn't a known product! Having bought, handled, and dived the light, the only problems I can foresee is a mishandled lighthead resulting in a broken bulb!
No one minded when Canadian Extreme started producing delrin backup lights, which are now popular on this board. Why? Because Darren from CE produces a great product! I think I was one of the first people on this board using CE lights (or at least mentioned it), because I found them on eBay. Were they a known product? No. No one worries about their CE lights failing because they're not Halcyon, right? And that's why we carry backup lights, isn't it? To have a near-failproof source of lighting in the event of a primary failure?
I like my light and I'm going to keep diving it. If anyone wants to go and spend $280 more for a battery pack because it's got a name brand associated with it, go for it. I'm spending my saved money on going diving. I've got me a 10W HID and I'm happy.
Ben