I don't expect a bank run -- where else are you going to put the money? T-bills? Got some bad news for you there...
Second, why not T-bills? When would T-bills be a problem? If the federal government went down. Compared to a bank, which would be a problem if the bank went down. Well, which is more likely to happen? I think the bank is far more likely.
I still have the gold sovereigns I bought in 2008, but that wasn't anything like "all in", more of a shiny desk novelty.