Interesting information ulfoaf.
I'm still struggling to see how an iWatch could be a successful product for Apple. I just don't see it and perhaps this is what they're still struggling with. It's hard to make a breakthrough device for something people don't actually need or want.
I've long thought however that if they could just put a GPS in the Nano it would greatly enhance its functionality as a fitness tracker for your runs/rides/hikes etc. I don't want to run with my AU $999 iPhone 5, but I'm perfectly happy to sweat over a $169 iPod. Not even the iPod Touch has a GPS as far as I'm aware...it's really quite surprising and a silly oversight in my opinion.