Just don't get it with those who support bitcoin bank systems.
Why do you have to use "bitcoin bank" while you can transaction with fiat ( in this case : internet banking, credit card or debit card) and you don't have to wait for confirmation like bitcoin, also they can freeze or lock your money anytime, simply they controll your money, you can't have privacy over your transaction.
Better to have your money on your own pocket, just a friendly advise.
People liking the idea of a so called Bitcoin bank are only having such ways of thinking because of the potential of earning a few sloppy percentages of interest annually. Some even state that they think it will increase the adoption rate of Bitcoin, but that's pure bs. People are only saying that for their own financial gain (interest over their coins).
Another point is that they take the term Bitcoin bank way too serious and compare it to how fiat banks are working. That's just another bit of bs. Whatever entity you allow to take care of your coins, you'll be nothing more than a slave of their system. You fully depend on them to take care of your coins properly and store them securely offline. But we all have seen with various exchanges, when things start to itch on the operator's side, hell beaks loose as he/she will run with the coins and blame hackers for the theft.