I second this. I don't know if I'll buy one; but, if I do, it'll be because of the health sensor / monitoring functions.
I don't need to see my texts on the device, nor my phone calls. I have a phone already, and pulling that out of my pocket isn't onerous. Heck, if I'm at my computer most of my texts show up there already, since most of them come via iMessage - and in a few months even the SMS ones will be there.