I've always rode English growing up, and now I'm starting to ride Western.
English and Western riding aren't that different. Though, in Western riding you wear your stirrups longer.
Here is my dilemma: Every time I ride Western whenever I'm riding at the lope my feet work there way out of the stirrups. It never happens when my stirrups are shorter, and if I try to shorten them my trainer always says, "are you a jockey?". But as soon as they're short that problem goes away and I'm 100% better.