What do you all think of the aqua sock type of shoe for an 18 month old? We bought a pair of these for DS from BRU and they have a rubber sole, but it is extremely flexible. I can bend it completely in half with one hand. I got them for him to wear places where he's likely to get wet, but started wondering if they would be good to wear anywhere outside the house. Would these make good all day shoes when we're out and about? I do still wear him lots, but he also like to walk a lot, too...