Yeah I always like listening to them for being paged out. Gives you a good idea what is going on in some areas where you may not listen to their dispatch all of the time. You can usually hear the helicopter quite a ways away due to the height advantage they have.
Ive also seen a few times where they will assist Abel1 on calls for river searches, or a lost person in the city you can see and hear them fly around the metro. I think thats pretty cool how they help kick in their resources to a call.