Just go for it. You won't regret
Advantages: 1. Value for money 2. Very stylish. Looks great on wrist 3. Amazing battery life 4. The always ON transreflective screen looks great in daylight. You can check time always like you do with regular watch 5. GPS for accurate distance measurement
Limitations: 1. Proprietary OS. I miss google maps & navigation 2. Very few watch faces as compared to android wear 3. Heart rate sensor could have been more accurate 4. Not able receive call from the watch. It only gives option to either reject or silent the call