I honestly like the of idea, and really think this FC is incredibly handsome, but I do have some reservations.
Many of the reasons I use my Apple watch during exercise would be filled by this, but at the same time, wouldn't be... I would feel odd sweating and working out in this watch (which looks like a dress watch) and I'm also a huge swimmer, and this doesn't do swim tracking (and again, I'd feel weird sprinting with this type of watch on). [Plus, I'd have to charge it; would be cool if the automatic movement/winding would be able to charge the battery as well]
I think the watch companies are on to something here, and I'm excited for the future! (However, I'll never give up my classic timepieces!)