I suppose that wearables are the new place where cross-platform tools and services must reside. Today Microsoft brought OneNote to Android Wear devices. You can now OneNote from your watch. If you want to.
It looks like this when in use:
So now, if you want to shout at your watch in public, you can. You will look so cool. With your smartwatch. That can sometimes understand your voice. Unless it is loud outside. Then you will probably not make that much progress.