I think as well and recently I have heard from a friend that he invested his money from bitcoin through banks. Unfortunately,he didn't tell further information about it. O guess banks could all adapt crypto policies in storing money. However,the concern is the way it develops and the maturity of it in the future. There must be a due process in the investment and a safe regulation so that it can bug unauthorized person to get the details of your investment. Crypto has a wide and good potential in the future in banks or any establishments it may have.