You'd have to get vrified to use it so essentially you are losing out on some anonymity. They do have pretty good rates on their cards so that shouldn't be much of an issue, or at least compared to other card issuers.

Just make sure that the foreign exchange rate is at least acceptable, because it can often be a lot if you're not using it in your card's native currency.

Also make sure you know all the limits etc. before you deposit anything into your card.