A good question is: Why would a bank want to give the option to their customers to hold bitcoin themselves? Isn't it against the whole point of a bank? I mean it's fine if they announce that they keep reserves in bitcoin, but why promoting it as a currency if it makes your business poorer?
The thing I like the most from their policy is this:
We will only offer Bitcoin, not other Crypto assets. Quite simply because only Bitcoin is really a decentralized blockchain application and from our point of view only Bitcoin offers sufficient security against manipulation. All other crypto assets are not comparable to Bitcoin.