Gold will be great in a slow-motion collapse scenario for a certain period of time before things hit rock bottom. You will have truly awesome purchasing power… but only within a certain window.
As Freedom mentioned, it will also be nice to have afterward. But food, ammo, and fresh water take priority over gold in a big way.
Ps Silver will be even better in that initial window of time given that it is so vastly undervalued. The % increase in purchasing power should be more significant than gold. I also believe there will definitely be some silver bartering, much more than gold, when things are at bottom.