* Displace smart phones/dedicated GPSes used for turn-by-turn directions (visual and audio) while driving. It's going to be great for motorcycle users. I'm not sure yet whether it will be legal for this use.
So could smartphones, at no additional difficulty. In fact they'll do so better if you have a bluetooth earpiece, as the audio will be routed right to your ear. There's nothing here a watch will do better than a phone. (There's also good reasons for continuing to use the dedicated GPS, as they tend to lose signal less, have maps predownloaded in case you go to an area with spotty internet, and have better databases of nearby locations. But I can understand wanteing to ditch it).
It will make the policeman's job more difficult by allowing drivers to check their emails/texts while driving without it being obvious to an observer.
Here's an idea- on the extremely rare occasion you actually have to deal with the police, wait 10 fucking minutes to look at your texts. Also, if you need to deal with the police more than once every 5 or 6 years, take a good hard look at what you're doing wrong with your life.
Provide quick updates to stock/commodity traders who are on the go or not near a desktop/laptop.
So does a smartphone, with a better UI, and more screen space for easy access to information
Allow joggers to skip songs without carrying their smartphones in their hands.
Or they could use voice control. But I doubt holding it in their hands or fishing it out of ones pocket is really all that much worse than trying to fuck around with your watch while jogging. In fact I would bet either of those are easier.
Yeah, still no valid use cases for a smartwatch.