Ron is a great guy with a strong passion for, and knowledge of the works of Donald Ross. For sure.
As more photos of Prichard's work at Ross courses become available though, I consistently notice that most bunkers have been reconstructed with grass faces and flat sand bottoms.
This makes me wonder if Prichard's work, particularly on bunkers, is always true restoration, or more an interpretation of the a "Ross style" Prichard has become fond of, and familiar with. Because Ross didn't always design grass face/flat bottom bunkers. The bunkers at my home club, Essex (Ross, 1929), have always featured flashed sand with a "turf ribbon" lip, as per the architect's intructions.
I should just ask Ron next time I speak to him. I'm simply thinking "aloud" I guess, for the sake of the discussion.