Do they do anything worthwhile in terms of adding value? I can see the point of having something on my wrist that keeps me on schedule but other than that do they do useful stuff? Anyone buy one and can't imagine how they lived without it?
The best purpose it currently serves is by acting as a mechanism to screen email/ texts. You just take a quick glance at your wrist and preview the subject and first couple lines. If unimportant, which most are, you can go about your business.
It's works decently for distance/time if you're a runner as well.
athenaText ,HIPAA compliant text messaging app, has Apple Watch integration. I can see this potentially becoming useful for staff to send quick messages that are less invasive then looking at your phone. I don't know many people that use it though.