I have seen some videos on it. But the people are always standing there or sitting down. :
I really need to try it myself. The PDM allows me to do it with one hand, and the watch requires two. It’s kind of an awkward motion to reach across your body while you are running. So I really need to try it and see how easy it is.
The other thing is how easy it would be to see the numbers. Sometimes it’s kind of hard to do that while running.