I try never to be 'emotional' when it comes to equipment selection no matter how hilarious the premise.

Its just that a pistol is alot of very heavy, bulky steel and having survived attacks by muggers, cars and animals on my bike I can't imagine ever wanting something that would take that long to use.

Most of the little bags described above are for the sorts of tools that go along with biking - Velcro and nylon wont do for long-term transportation.