Living in Portland, Or I like to think I know a lot about rain and waterproofness. I never buy a jacket unless it is gore-tex or at least 25-30,000 mm waterproof rating, so when I came across a pair of Gore-tex biking shoes I sprung at the opportunity. I've had about 3-4 chances to put the gore-tex to test during some epic down pours and they held up great! I was caught in a huge storm about 6 miles from my house after class one day and battling the wind and rain was terrible on my other rain gear (pants and jacket) to the point where I could feel the water getting under my jacket but my feet were surprisingly dry and warm! Much like the other reviewer said they are pretty much true to size, I ordered a half size larger and found they fit nice but not as snug as if I got the true size. I haven't gotten a chance to ride with them in sub 45 degree weather as the other reviewer said but I will be soon in about another month. They have so far held up to my expectations of waterproofness.
They get the portland 5 star waterproof rating!
Bottom line: If you commute 365 or in the winter and need shoes that will keep your feet and toes dry when you get to work/school pick up a pair of these Northwaves!