[Skindiver]

I always suspected that water equalising practitioners did it within the first few meters of a descent.
Why would a diver that was prepared to water equalise wait till depth after pumping plenty air into the airspaces to get there ?

I always thought it would be better to get it over with sooner.

As for priming the eustachean tubes with water before diving.. thats a new one for me and it makes some sense , if you can keep it in, in between warm - up dives.

Skin.