I think no banks accepting Bitcoin because Bitcoin does not help banks get more profits but also reduce the bank's profit. Bitcoin is a digital currency, Bitcoin transactions are made thanks to the internet, it is completely free. Banks do not like this.
Right now not yet because all bank is control by the law of government, if bitcoin allow to store in the bank maybe it make a big problem to user of bitcoin, because when you store your coin in bank there is possibilites that they can put you tax and you must obey there law.
Otherwise your identity will be uncovered when you use the bank to saving your bitcoin in there? certainly decentralized and anonymous will not apply when you use the bank right ? Besides, I have not heard from the bank that they accept and support bitcoin openly, which I often hear is that government in a country bans the use of bitcoin to their citizens