Interesting article from watchaware.com. I'm still not convinced Watch bands will be proprietary but I have a feeling Apple will tightly control it as much as they can with some sort of "made for Watch" program. I'm also not convinced it will be that easy to make cheap bands that will integrate seamlessly and look nice. I think it will be easy to tell when someone is wearing a non-Apple approved watch band.
http://watchaware.com/post/7466/apple-watch-bands-be-proprietary
http://watchaware.com/post/7466/apple-watch-bands-be-proprietary
Tim Cook has repeatedly said that Apple Watch is meant to be worn. Its not just with you, its on you. What hes saying is that Apple Watch has a lot to do with style. How it looks is incredibly important. And a huge part of how it looks is dictated by the Bands, perhaps even more so than the Apple Watch case itself.
If you believe that to be true (and I do), then think about what an ugly band might do to Apple Watch. It would diminish its beauty. It would compromise the years spent by Apples designers and engineers to make this a product people want to wear. Most importantly, it brings down the revenue the ASP of Apple Watch as a whole. If you could just make an adapter and put on any strap, you could effectively turn Apple Watch from something that looks thoughtfully and beautifully complete into something that looks pretty crappy. And thats not something I think Apple wants.