^^ No, I have not. That is kind of the point. If anyone wants to say, "I like how they feel", fine. But when someone says they are rubbed bloody, etc by wearing something other than breeches, or that you cannot have a good seat or ride well in anything else, I ain't buying. Why? Because too many people do fine riding English in something else!
I've pointed out the Cavalry wore loose fitting pants, and did some pretty demanding riding without being rubbed raw: https://www.youtube.com/watch?featur...vimZuF5o#t=244
Lot of endurance riders ride in something other than breeches. I've never ridden in anything but jeans, and my legs don't end up bruised (unless my horse spun fast enough for the poleys to slam into my thigh). I can't speak to dressage - don't do it and never will - so maybe there is something about dressage that makes your legs rub a lot against the saddle or horse?
But some of the rationales used here are a bit odd. More streamlined? Keeps you closer to your horse? Jeans force your leg forward?
What about these guys (Portuguese Cavalry):
But of course, dressage lessons are sooooo much tougher riding than that! YGBSM! Xenophon was naked under his skirt when riding, but I guess he got away with it because there were no stirrups.
I don't care what you ride in. I'm 55 - unless you are female AND very pretty, I'll be looking at the horse instead of you. Maybe it is because I wear guy jeans, and my guy jeans just don't restrict my movement much. Or maybe it is because my jeans are all 100% cotton. Maybe it is my skinny butt...an adjective that doesn't describe my waist, unhappily. But no, I'm not buying that breeches are needed for riding, or that jeans make your legs go all funky.
"Breeches allow you to sit in the saddle without having to rearrange seams, folds etc. without causing any restriction to the knee or hip/pelvis if fitted well.
For a trail ride in a comfy stock (Aussie) saddle, absolutely wear a pair of jeans. I imagine a Western saddle also allows for jean wearing. But a Dressage saddle, no way jose!! Not if you actually want to actively ride.
I ride either in my DownUnder or my Bates. I use a western saddle about 4 times a year anymore. But MY jeans have never forced me to rearrange folds, or restrict my knee or pelvis! I actively ride. I don't just lump over in the saddle, holding on to the horn in hopes of staying on. I use my legs a lot. My jeans are black on the sides of the lower leg from the black dye in my saddle. And no blood or blisters yet...