Just got a Microsoft band fitness tracker/smartwatch thinger.
Doesn't feel totally awful on my wrist, but does feel weird to have something on there. Currently I'm opting for wearing it on the inside of my left wrist, my non-dominant hand.
I'm going to try and ignore it for the rest of the day, and see how far I get with that :)
About a year on, and it's okay, not great. It's sort of falling apart, but does work really well otherwise.