They do not add points to your score for appearance. They do however judge best Brodak kit {sponsor). And also pilots choice but again no points awarded towards flight scores. Unless they changed it last year as I did not make it.
No offense intended, but when the ED says that's what they are going to do, I would presume that to be definitive. From a competitive standpoint, appearance points really have no net effect in intermediate, because the difference between the skill levels tends to be *much larger* than 20 points worth. At local events, the few intermediate battles are almost always decided by someone overruning, underrunning, leaving out a maneuver, crashing, etc. It's better than that at the NATs, but you still have a huge skill range and that almost always decides it.
It's not an official event, so they can more-or-less do what they want, but barring a stated deviation, better start polishing!
Brett