I have installed it. time will tell whether I will actually remember to use it when I need it.
One thing you should definitely fix - once you install Android app and run it for first time, it tells you that you need to sign in using your G account. I thought the reference is for the web-app since the android app already listed my G account email address at the bottom of the screen. In the web-app I checked I am signed in and yet I could not do any push. So I was frustrated why the wep-app does not recognize my android device. I touching the android app randomly and finally a random click on my email address made the connection.
Its definitely not obvious how to pair the device with the web app. You should make some button in the app