I can't see how a touchscreen in a wristwatch form factor will be anything but clunky. Why not just make a nice stylish watch that also acts as a voice interfa

I can't see how a touchscreen in a wristwatch form factor will be anything but clunky. Why not just make a nice stylish watch that also acts as a voice interface to my phone? Or a watch that can accept a SIM card for those occasions when carrying my smartphone is too cumbersome (seems that this might be especially useful for ladies who want to wear evening dresses that don't accommodate full-size smartphones).