I detest ringtones in the office, so my phone is always set to silent. My Pebble allows me to see my wife calling/texting me. This alone justifies the price. The Gear is overpriced for what it offers, and requires their phone to work. My Pebble works with android and iOS. (disclaimer, I only use mine with android) I can set the watch face to whatever I like, including the very useful Beer O'Clock face that a friend made.
I prefer to check the time with a watch. Till I got my Pebble, I usually wore one of several Invicta chronographs that I own. I don't like digging a phone out of my pocket to verify the time, especially when in meetings. A quick glance is sufficient to tell when I am going to be late getting home, without the rudeness of pulling my phone out and conspicuously checking time.