I just ordered me a "Jack Sack" http://www.powerofbauer.com/ The ultimate manpurse!!
mtool - love that old gasmask bag. Mine was a similar style, just US markings with a slightly longer flap. I think my favorite thing was that it had the waist strap that let you tie it to your side if you were having to jog or ride a bike or climb over something...something that a lot of the tacticool bags still lack.
My GF doesn't even own a purse, just carries a wallet. I want to buy a "manpurse". There's just something inherently backwards about that.
Great pic Gareth - I bet they had lots of sandwiches in those bags