I own a moto360 one for almost a month now. You are probably not going to say "ok google" all the time so most of the features that require your voice are pretty useless. To be honest I only use them when driving. What I really use it for is:
1) Check who is calling. If I am on a meeting or otherwise busy I can drop the call.
2) Read messages/gmail(full message)/whatsapp etc. I will have to get the phone out of the pocket only if I need to respond.
3) Notifications/reminders/weather reports etc.