The idea is good, but this is where I think the idea fails:
If BUNQ is proposing this to be used as a "travel card", it makes no sense to charge a fee every month. It should be charged only when being used. Secondly, this is completely redundant if you already have a mastercard credit card (in my case). The FAQ does not cover this simple question:
"What is the difference between this travel card, and a regular bunq master card (not Maestro) for which you may already have and being charged for?"
Anybody?