Anyone use the Revolut Prepaid Card Premium?
 

I'm looking for a good option for money abroad and this seems to be the best I've found so far - it's a prepaid credit card that uses interbank rates for FX exchanges.

Premium adds £400 free ATM withdrawals, and global express delivery (should I lose the card), and some medical insurance that I can't find the terms on which probably means it doesn't cover overlanding.

compared to the average travel credit card, it seems like a really good deal, so I wanted to check if anyone has used it and if there's any gotchas.

https://www.revolut.com/