Actually, I alternate them because I"ve heard too many stories about people somehow igniting the heads of strike anywheres on the lid of their match safe. The poof and die in those cases, probably blew themselves out- this way, IF that should somehow happen, ok, some have singed butts, and others are tinder. *shrugs*

And yes, most likely the square end would turn into a rocket nozzle if this thing somehow had a catastrophic and spontaneous detonation. But odds are, the only way that will happen is if I fall off a cliff, or get stuck by lighting. Either way... I'm not sure I'll really care.

But yes, I do agree with the point that you and Mike raise about a containment vessel being a Bad Thing (TM) if it fails. That is why it is NOT carried next to my skin. I want stuff that will soak shrapnel between it and my spine. *laughs* Now, what I'd really like is something like a desicant pack that turns atmospheric O2 into a compound that is non flammible....