"cascading cross defaults"
I don't know anything about CCD so I can't comment intelligently. However, I suspect that during a crisis there are ways to bypass or nullify a bank default, essentially run the economy in safe mode to allow people to obtain necessities. After the initial crisis the system would be sorted out. That's my guess fwiw. So do you have alot of cash stashed away or plan to bug out somewhere?
I have some cash, plus small amounts of Silver and Gold.
But, and it's a biggie, when things are going from bad to worse, having and good supply of food, water and necessities
(a small generator), firewood, firearms, ammo, small wood burning stove, good security system all sure go a long way to insuring survival.
gold, silver and cash may not do much for the short haul.
PLAN ON HUNKERING DOWN FOR A WHILE.
Lurking'