I found maybe 40% of the time, I'll miss the notifications until I looked at the watch. However, I didn't feel the Taptic engine on my wrist when the notification comes in. I have increased the tap strength to the max. Sometimes I wonder if the Taptic engine is not working on certain occasion. I did have a Pebble, which I believe has the strongest vibration motor from all the smart watches I ever had (Android Wear mostly). What's your experience so far?