from the article:

> Initially, we experimented by building this as an app on Pebble, since it has a mic and I’m always wearing one. But, I realized quickly that this was suboptimal - it required me to use my other hand to press the button to start recording (lift-to-wake gestures and wake-words are too unreliable). This was tough to use while bicycling or carrying stuff.

It looks to me like the big benefit is being able to use just one hand for this. I'd be more likely to use the watch, too, but this would be great for people with one arm, for example.

Do you never take your watch off to charge it? Or to sleep? When showering?

More importantly your phone and notes app is always with you and you can type your thought into it without disturbing people and looking like a schizophrenic Green Lantern.