I really have no clue about jodhpurs, but for breeches, I like them to be at the bottom of my ankle and almost to my waist. Although, mine are a bit short because if I got them any longer, they'd be too big. If I'm just wearing half chaps, I'll wear regular ankle socks but for showing and clinics, with my boots, I wear longer socks and tuck my breeches into them. I also have a nice tan colour for shows/clinics whereas I have black ones and a darker tan colour for everyday use.
I say breeches just as it looks, so yes, it'd rhyme with beaches. :)
Forever loved, never forgotten; my beautiful Indie. <3 Hoofprints on my heart.