My saddles have all been suede seats so no problem with the breeches and grip there, cotton + suede is almost Velcro for me haha!
Jeans just feel way more natural in a western saddle if that makes sense. Posted via Mobile Device
Eta: I've worn breeches western because I ride both English and western horses in one day. I hate trying to squeeze jeans in half chaps to do English and also hate wearing western boots English so breeches and swapping boots between rides is what usually happens.