sometimes i do. but not on short runs and not during races. and runkeeper can already tell me my pace. my headphones can change my music.Do you ever run with your iPhone now to use for music? If so, then all your doing is strapping on the watch as a quick go to in order to view your mileage, change songs on your iPhone, track heart rate, etc.
If you don't use your iPhone while running for music and use another device, sure I can see the lack of GPS being an issue.
If it had a higher battery life than the 620? I love mine, but signed up for a 'longer event' and already start thinking about keeping it all in a device. You know, not on Strava -> didn't happenyeah. I didn't think the Apple watch would replace my Garmin FR620, but no GPS in the watch by itself was a dealbreaker.
GPS is not accurate enough, IMHO. A second system like the russian GLONASS (iPhone) increases the accuracy, especially under non-ideal conditions (woods, cities, ...).I'd have to agree with you. If I were to be tempted by this, it would have to a GPS so I can use it on my runs.