Be aware that if you fail the ID check for Curve (which I somehow managed to do) they’ll essentially just ghost you without offering the opportunity to try again. I’ve tried a few times to get someone from their customer service to help me sort it out, but it always fizzles out after a couple of messages.

As an alternative, I use Monzo with a Garmin watch. It’s not perfect because I have to transfer any money I want available from my bank to Monzo, but once I’ve done that it’s easy enough to access on my watch. All in all, I mostly carry my bank card in a magsafe wallet, but it’s handy to have payments on my watch in a pinch.