I think it's important to distinguish between the aegis of the callers -- level of difficulty and number of rotations (jumps and spins) -- and what the judges themselves are responsible for in the elements space --calling the difference between lutz and flutz, lip and flip, deciding how to judge the gap between steps and jump in the SP -- not to mention the program elements, where taste seems to rule supreme.
Is there a noticeable difference in the way regions evaluate the technical elements controlled by the callers that can be explained by taste? For example, when trying to evaluate whether a jump was under- or over-rotated, are there regional differences -- i.e., one school giving .5 rev slack to loops done in combination, but others requiring full revolutions? Does regional taste affect the way in which relative difficulty (ex: level of lifts, spins, spirals) is established?
Factoid: Everything that the callers say to each other during the competition is taped.