Interesting, but I suspect "real" banks have a long time ago devised a better solution: instead of storing money, they lend it out to other people. That is presumably how they make most of their money.
But perhaps the old school "let's store money in a vault" thing becomes viable again with BitCoin, will be interesting to see.
On the other hand, storing USD or EUR on a "real" bank will effectively leave you with less money than you put in, unlike Bitcoins which have been gaining value even when sitting still.
But perhaps the old school "let's store money in a vault" thing becomes viable again with BitCoin, will be interesting to see.