didnt hear of any bank accepting Bitcoin yet.
That is not gonna happen because they have their own money, they only accept what is legal and regulated by the government.
Bitcoin as a currency cannot be regulated as banks cannot control, it will always stay decentralized and even if banks will create their own blockchain it will not beat bitcoin.
i don't think it even makes sense to have a bank keep your bitcoins, it;'s just like leaving your personal bank in the care of another bank and hoping it will be safe, why didn't you open an account with them then than setting up your own bank?
No I dont think so that its going to accept by any bank but its acceptable by some exchange but as we know that in some countries bitcoin is already legal so hope very soon bitcoin will be accepted in banks also its also true that in some countries have a credit cards of bitcoins in Europe so its very easy and possible for banks to accept bitcoin.