Be careful what you buy.
Physical metal is what most people think they are buying.
"Paper" metal is what many are actually buying.
If you are looking for the inflation hedge, paper metal is as good as anything else, for the most part
If you are looking for the SHTF protection with physical, then paper doesn't get you there. Neither can you necessarily rely on the realization of the physical (easily or reliably) when the SHTF.
Denomination of the physical can also be a problem in a SHTF situation. "Junk silver" (circulated US silver coins) are understandable and in convenient denomination. I don't know what anyone might do to ask for change while negotiating the purchase of a dozen eggs with an ounce of gold in the SHTF situation.
If you are prepping for that I might recommend that you look into an alembic still, and learn how to distill spirit alcohol.
People will likely barter tonight's dinner for a pint of white lightning, in the end times