Canadian bank offers Blockchain-Based safe deposit boxes for crypto

As some banks stop processing payments for virtual currencies there are a few moving in the opposite direction. With institutional investors getting into hodling and trading digital assets i could see something like this taking off.

Of course storing anything crypto in a bank puts you back in the third party trust model

https://cryptoren.com/versabank-safety-deposit-box-cryptocurrencies/

South Koreas Shinhan Bank announced it was working on a somewhat similar project, planning to launch a bitcoin vault and wallet platform by mid 2018.

Crypto Security has never been more important. How about you? would you store say, private keys in a blockchain backed safe deposit box?