No shoe without a waterproof membrane (like Goretex) is going to keep all the water out, and IME those with a membrane will just soak your foot from the inside with sweat instead. Remember, if the water goes in fast, it comes out fast. One of my last trips in the fall, I had to cross a creek (pronounced 'crick' here in farm country) twice at around 2PM. I walked right through wearing some Smartwool medium weight socks in my NB MT811ATs. The water was over the top of my shoes. I walked until 6:30 or so, sat around camp for a couple of hours, and when I went to bed my feet were already dry and the shoes were close. This day was overcast, high <60, low 43, very humid, and they were almost completely dry when I put them back on around 6AM. They performed very well from this standpoint.
They do leave the bottoms of my feet sore every time I hike in them though. If you are interested in performance in other areas, do a search for them as I know there have been a few threads recently that they were mentioned in.
-Tim