Noticed an ad for a Capital One account paying 2%

Pretty decent rate for a money market right now.

https://www.capitalone.com/bank/savi...47_211874092_0

If you had say $50K in an emergency fund at a local bank paying 0.5% and could move it to get 2% it would be quite the difference with similar access.

Anyone utilize any accounts like this? Any drawbacks? Other than Etrade I've always just used brick and mortar banks.