In my tenure as chief surveyor of wrist-based accoutrements, I'm making it official, the big watch wins. Primarily for girls, but also for boys, but the girls are winning more. I'm unsure about the weird double wrist-band thing I've seen on a few occasions, it's like a very non-committal form of BDSM, and really doesn't seem very practical. Why not tie your watch to your wrist with a bit of old twine? Designer twine.