I guess I'm not sure what your asking. As far as saddles
I prefer a western type endurance saddle without a horn. Although my current saddle has a horn there are times I'd like to cut it off. Since we trail ride, the way the saddle is made is much more secure. Some of the big western type saddles are difficult to get a close contact feel with. Many of the newer ones are really no different than the english in that respect. English saddle are worn with half chaps or boots to keep your legs clean and western have a fender to do the same thing.
I'm with the poster from Australia I have a hard time understanding the difference
As far as disciplines
go, I enjoy watching eventing and would like to try it. I doubt I could jump comfortably
in a western horned saddle.
I think riding is the same whether you are in a western or an english saddle. The cues are basicly the same except the neck reining vs direct reining. I use my seat and legs for cues the same as any english rider would.