I may as well answer this question (or at least attempt to answer it).
The engine runs well on Android. Just check out some of the games on F-Droid which are Godot-based.
So,if you want to run your Godot games (or even apps that are made with Godot) in Android, you can easily do that. Just develop the game as normal, and export it to Android. If necessary, install it on an Android device (e.g. Nexus 9 tablet) and see whether it works well for you. If not, go back, and make the necessary changes to your game until it works like how you want it to work.