Sparky
I guess this will be pilot specific, the more experienced pilot may wish to use Airfield QNH (as opposed Regional as you stated), it could have been a case where he had forgot to set QFE, in the grand scheme of things as long as you are comfortable with whichever you use then I see no problems, however, student pilots & inexperienced pilots alike would be well advised to use the system they were taught by their instructors
Dean