To be fair, I think these are a pretty neat idea. I like the idea of just having to glance at my wrist to see who’s calling, or when an alarm for a reminder goes off. Sometimes, my phone is zipped up in a back pocket or inside a jacket inside a waterproof. Stopping, getting the phone out when it’s ringing only to see it’s a bloody spam PPI caller or a debt collection company ringing about money I don’t owe anybody is a pain. Being able to reject the call from my wrist is useful, as is using it to control the phone when it’s in iPod mode. I’d also imagine they’d be handy on a bike, or when driving – a simple glance to your wrist to decide whether you can ignore the call or stop the car and answer, rather than fumbling around to look at your phone screen, which of course, I would never do, but I assume some people do. 🙂
I assume they’ll be eye-wateringly expensive at first, but when they’re affordable and, as Lifer says, come bundled with phones, I’d definitely consider it.