I've competed in a Scale Master's contest with my N-28. I presented the judges with descriptions of the "non-standard" maneuvers such as Vrille, Renversement, Virage, etc. and got their agreement as to how the maneuvers should be performed. I did manage a 3d place.
If I were a judge and the contestant was flying a Fokker Eindecker and did an "Immelmann turn" as modern aerobatic planes do it, I would be very disappointed.