I don't know about others but I have found that the most useful input device for the watch is my nose. I have deftly learned how to not only tap reply and the dictation microphone but also swipe up for glances and down for notifications. Extremely useful when hands are full or dirty. I would suggest that Apple develop a training video to teach users the best way to interact with their watch using their nose. I can count on my nose every time. Unfortunately the same cannot be said for Siri right now on the watch.