I've only gotten hooked this fall so I never got to wear VP's in summer now I have a question for you "longterm addicts": I wear usually a 39 in VP's but my foot is nearly as long (not spilling out forbid) as the sole but if I wear them with tights I sometimes even slip out of them. For summer I was considering a 39 1/2 but I fear my foot slipping out or my toes sliding down ...ick ? Anybody have this problem? What do you do , size up in summer, use some sort of soles ???