since we all understand by now that this is a really good light, I would like to hear more about this new type of battery connection. while my canister can really take a beating (and he has!), this screw in battery sounds like something that might be less durable on rocky boats with regular usage (which is what I do, 2-3 dive days a week). anyone can comment on that?
The new canister is basically a backup light without the head. I wouldn't be concerned about its durability since it seemed pretty sturdy to me. Now Halcyon is also selling just the light head with E/O cords, so you can replace the canister if you want. I think the biggest point of failure might be the magnetic switch though. If you break the safety screw, the light is useless since the switch will flop effortlessly from one side to the other.