So the use cases like "get down from a ladder" aren't really likely to be achieved in real life? When I'm working on a ladder, I'm not going to be checking phone notifications anyway.
Yes. The 2 types of earthquake alerts each have a unique sound that was designed specifically for earthquake alerts. They are available in the supplemental data folder that's associated with the paper (you can also hear one of these by going into the android earthquake settings and clicking on the Demo feature).