We have schooling shows at my barn. Western , English and gaited classes all in the same show, but gaited and non gaited are separate. I've decided not to do it anymore unless there's this 1 judge there who has TWHs'.
The other 4 judges they've used, well I've seen pacing get a 1st, pretty horse. I saw it again with another horse. I've heard a judge ask someone what the 3rd gear is called (we're just showing flat walk and one faster gait.)..I've watched a judge all day pin all the solid colors but non of the paints, roans, etc got anything! I've had a judge tell me I didn't pin because my horse was not lively enough. This was a trail class! One class I didn't pin in because the judge said she didn't see a difference in speed in my gaits. I had gone from a nice flat walk to a rack-as-fast-as-you-can. Big difference.
The one judge I will show when she comes. I understand 80% of who gets 1st, 2nd, etc. And her comments are understandable as well. She knows.
So, be careful where you show. I've had people tell me my horse was lame because they didn't understand a flat walk. I hope you can find a schooling show somewhere specifically for gaited horses, and get some feedback that can really help you.