If the biggies can save themselves, like they did in 2008, then you are not talking about a survival situation. Granted, it might be nice for people to have some physical cash on hand...to diversify from digital cash, for short term situations.
Gold might pay more of a role in a true financial panic (with people jumping out of windows on Wall Street). We've had those before in this country, more than once.
As for me, I would never commit to one answer. Diversity is the key. You can't predict what will happen. Buy a little of everything, then see what happens. Based on my posts above, you might think I'm a big gold guy, but I know that if there is a financial panic, and the dollar goes to zero, I will lose most of my wealth. Most of my wealth is stored in digital dollars in my investment accounts.