Since I'm short one bike now, I'm considering the possibility of getting something custom. Let's ignore for the moment how silly of an idea this may be. Anyway, I've been browsing builder sites, and I've seen a few frames whose seat stays meet the seat tube lower than the top tube. Out of curiousity, is there any ride difference or advantage for that kind of frame? I stole a picture from Strawberry Cycles, ignore the monostay.