Check out this link to Freedom Saddle The saddles they make are made for gaited hroses, not just tagged as a gaited horse saddle. Most gaited horse saddles are made on QH bars but not these. No they will not fit all gaited horses but they will fit the majority. I used one on my TWH at a Larry Whitesell clinic and it did make a difference.
I love the way those saddles look! They appear to be very comfy and functional, but unfortunately my bank account wouldn't support the cost of one right now