Well, the "more often" part is part of that pervasivness I was talking about.
With all respect, Tom, (and with my usual frankness

) the idea that critical listening skills "fit better" in mastering than elsewhere is just the kind of attitude that needs changing, IMHO. The whole idea that better ears belong in mastering more than they do in tracking or mixing - or arranging or performing or producing or gear selection - is a disingenuous premise.