Ok so I finally have on order my (I mean Joshie's!!) first pair of adorable longies....and Im just wondering how most people use them?? Like do you use them as day pants, a night nappy cover or both?? ATM Josh sleeps in a one piece suit, so Im abit worried about him sleeping in longies with a jumper incase the jumper rides up and his back gets cold (cos I figured if I tuck it into the longies the jumper would get wet??)