i'm sorry, but it's hard for me to take ANY of these preppers seriously. maybe it's because of the fringe clowns that we seem to be exposed to, but also people like Jim Baker, and some of the clowns on the doomsday prepper show, but they are all sort of dumb.
that said, i had a neighbor in Houston who was a successfuly business man, not at all clownish, someone respectable, and he had like 36 months worth of supplies in a shipping container style room he built into his house. he had no toilet, and i forget what he said his plan for that was, but he also illegally (i watched him do it at night, by hand) drilled his own water well in the backyard. so maybe he was a little fringe-ish.