Every western saddle I have tried on him so far has elicited ears back snarl and a short choppy stride. He has a slight roach and just does not like anything on his loin area. Looking at all those western saddles, the area behind the cantel is rather flat. Seat seems to generally put me on my pockets (ie, weight on his loin).
I am NOT bemoaning close contact, etc etc.
I have just discovered this saddle: http://www.westerndressageridinggear.com/index.html
and I plan to test ride one as soon as I can. It has panels like a dressage saddle (open gullet all the way front to back), cut back skirts, and many rigging options.
thanks everyone!