I have a G watch R, Initially I wore it constantly, but I stopped wearing it around the house, it seemed to get in the way. Admittedly I never really wore a watch before so it could be that.

I feel odd going outside without it though, I have bluetooth headphones, so on my walk to/from work, my phone can stay in my jacket pocket, and I still get notifications and can control my music.

I use the heart rate/step tracker a fair amount too as I'm trying to lose weight.

I don't use the other apps on there particularly regularly, although I found the 'remote camera view' app is great when working behind PCs/Monitors.