I have found the watch the most convenient NFC payment option of them all, if a place supports NFC payments at all. So many places still put the readers too close to the cashiers and getting a phone near them is awkward, but usually you can wave your wrist at them without problem. I still love how spooked cashiers sometimes get when you do that for the first time around them (and they often don't realize they support NFC payments because no one wants to try the awkward phone angle) and it looked like you just waved your arm to pay.