Got the grey in a half size up (normally 10, got 10.5). They fit great, are warm but not too hot, comfortable, and definitely waterproof (have taken them through snow and puddles successfully)! I have worn them commuting in Chicago (walking to bus, train, waiting outside in cold) with little issue, however they're a little cumbersome if you are in a rush!
I have the Cloudies slides and was curious if these would be equally comfortable, (& more suitable for winter). Definitely like them as both...