I'd like to carry my M9, HiPower, M4, or that 8 shot .357, TRR8 I think it is.

But I don't. So I carry a 442. I can't tell you if it's enough. For all I know I'll be dead in a gunfight. But I have to draw the line somewhere between practical and desire. I do think for a lot of scenarios, it would work and it's more about if I can use whatever gun I have properly. For me they are the perfect balance of availability, useability (at closer range) and speed of employing from the get go. It draws fast and carries easily. And isn't fatiguing to carry all day long. Although even that small of a gun there are times I get tired of carrying it. I don't have great health, so....