In a crisis, governments can and will shutdown bricks and mortar banks as well. The difference is crypto-currencies operate on a decentralized peer-to-peer payment network. Viewing crypto-currencies as another asset class in addition to precious metals makes the most sense in a life-boat, grid-down scenario.
Here is where we could be rocketing to. Read this exciting article from Crypto News.
https://www.cryptocoinsnews.com/heres-how-the-bitcoin-price-reaches-100000-by-2021/