Indeed, too much emphasis on "correctness" could discourage some people from wearing the kilt for fear they won't get it "right." To quote Terry Varga from Bear Kilts, "Kilts are garments, not costumes!" Unless of course you are in the military or a pipe band that has an actual dress code...

That being said, it is useful to have guidelines of what might work and what tends not to. What is perhaps more interesting is the reasons people give for their statements regarding rules. To simply say that something is "traditional" isn't always accurate when contemporary kilted formal wear has taken a fairly large evolutionary step from where it was in the 19th century.

A simple IMHO (in my humble opinion) goes a long way towards disambiguating a rule from preference. When a rule is given, I have more reason to follow it if there is a context and explanation attached to it.