Yeah, I've got the obession with gold as a sound post-apocalypse move. It might do well when the financial markets are in turmoil, but that's only because investors tend to flee to the commodities market when that happens, yet the chance of an apocalypse that cripples the financial markets yet leaves the commodities intact is... well, zero. It seems far more likely that post apocalypse the things you are going to need to survive and eventually (not to mention hopefully) trade with are going to be far more fundamental; food, water, fuel, livestock, manual and basic mechanical tools (in all their forms) and other basic supplies. The slightly longer term view might be things like seed stocks, construction materials and other other things necessary for some form of civilization to try and get back on its feet, but gold... not for quite some time, I'd imagine.
Another way to look at it; when Europeans were heading west across and establishing settlements across what would later become the US and Canada, how long did it take before currency (or company scrip) really took over from bartering as the defacto means of trade? And that's in an environment where there was (mostly) a lot of co-operation going into pushing on towards the Pacific and building a viable colony in the wake of the wagon trains that would be needed to help support them once they settled. Assuming that is the kind of environment that you are going to find when you crawling out of your bunker dragging your pile of gold seems like it's ruling out a lot of more likely, more violent, and far more long-term scenarios than all the survivors giving each other a pat on the back and getting straight on with rebuilding civilization.