Personally, I ride in jeans. You can get some really nice jeans now with no seams. You can also get some good stretch material jeans too which are comfortable. I personally don't like riding in breeches (in NZ we call them Jodhpurs) but that's simply because you can't wear them showing, so don't wear them training/trail riding. However... I am looking at doing English classes in the western showing, so will need to get myself some.. and will need to practice in them before the shows, so yes I would ride in them then. Not usually though. Hope this answers your question.
I've ridden in breeches in Western classes but made sure they were the same color as my chaps. When I've had to switch quick from hunt to a western pleasure class at a show, I've tossed on a western shirt over the Ratcatcher, pulled on chaps and western boots and run for the arena. Otherwise, I prefer to ride in jeans, I think they're more comfortable.
Cut-offs, bikini top & bare feet! Ok, that was one time last week when it hot, usually Qbabys for everyday riding, for showing I like the Hobbyhorse sidezip pants. I really don't recommend the cut-offs on a bareback horse unless you have really tough skin on your butt, it's been a week now and I still have a raw bottom! Posted via Mobile Device