Well, guess it's been a couple of weeks since I've had the boots. They are breaking in really nice, and yes, they are extremely water proof.
One thing I have noticed, it seems like the lugs on the soles are wearing pretty quick. I thought they looked like somewhat of a softer material when I bought them, but you can tell they are wearing somewhat quick. However they are wore 5 days a week for at least 14 hours a day.