It's incredibly convenient. The watch is basically an extension of the phone. My current phone is a Note 4, so it's pretty big and its QHD screen can chew up battery pretty quick under the right circumstances.
Instead of pulling it out of my pocket and turning on the screen every time I get a notification, my watch vibrates and I can view it right there. Depending on the app, I can interact right from the watch, open the app on the phone, so by the time I DO take it out of my pocket, the app in question is loaded up and showing the information in question. Alternatively, if I don't care about the notification at the time, it's a simple swipe to dismiss it and then it's not hanging around in my notification tray when I turn my phone's screen on later to do something more important.
For things like Hangouts messages and gmail, I can respond by voice-to-text without ever pulling my phone from my pocket.
If I wanted to (I rarely do), I could change the face on my watch every day to suit my mood or, as the app in the OP does here, better match my wardrobe.
Then there are the apps. They're a bit limited right now, since Android Wear is still young, but there are some handy ones.
I have an app that vibrates the watch when it disconnects from my phone and gives me an option to ring the phone if I accidentally leave it behind.
There's an app that acts as a camera remote, so you can prop the phone up across the room for a group picture and see the shot on the watch and use the watch to trigger the shutter. This can also be used to get a better look inside or under something, as you can hold your phone under the car (for example) and use it's camera to view what's under there on the watch itself.
As I said, AW is still new and more apps are being developed as well as existing apps adding functionality, but given the number of manufactures getting into the wearable game, there's no reason to believe that development will stop any time soon.
Hope that helps. Let me know if you have other questions.
Instead of pulling it out of my pocket and turning on the screen every time I get a notification, my watch vibrates and I can view it right there. Depending on the app, I can interact right from the watch, open the app on the phone, so by the time I DO take it out of my pocket, the app in question is loaded up and showing the information in question. Alternatively, if I don't care about the notification at the time, it's a simple swipe to dismiss it and then it's not hanging around in my notification tray when I turn my phone's screen on later to do something more important.
For things like Hangouts messages and gmail, I can respond by voice-to-text without ever pulling my phone from my pocket.
If I wanted to (I rarely do), I could change the face on my watch every day to suit my mood or, as the app in the OP does here, better match my wardrobe.
Then there are the apps. They're a bit limited right now, since Android Wear is still young, but there are some handy ones.
I have an app that vibrates the watch when it disconnects from my phone and gives me an option to ring the phone if I accidentally leave it behind.
There's an app that acts as a camera remote, so you can prop the phone up across the room for a group picture and see the shot on the watch and use the watch to trigger the shutter. This can also be used to get a better look inside or under something, as you can hold your phone under the car (for example) and use it's camera to view what's under there on the watch itself.
As I said, AW is still new and more apps are being developed as well as existing apps adding functionality, but given the number of manufactures getting into the wearable game, there's no reason to believe that development will stop any time soon.
Hope that helps. Let me know if you have other questions.