I've used these shoes for several cold and rainy commutes, and am surprised at how well they protect my feet against rain and road spray. A little moisture may seep in around the cuff above the ankle, but the feet and toes stay dry. The shoes also insulate well in cold, dry conditions without making your feet feel clammy. The longest I've ridden with these shoes is about an hour, but I have friends who use these for longer rides (3 hours) and greatly prefer them to road or MTB shoes with booties. If temps get REALLY cold-i.e., sub-teens-you could wrap neoprene covers around these shoes and be reasonably comfortable.
Oustole and upper constructionfinish looks very high quality, so Im sure I'll put these shoes through several seasons before needing new ones. However, like most cycling shoes, the stock insoles are pretty chintzy so I recommend swapping them out with nicer ones with customizable arch support. Also, the high cuff might feel a little restrictive if you're not used to riding in boots, I got used to it after a few rides.
Lastly, Shimano doesn't sell these in half-sizes, so you might have to upsize by 0.5 to 1. For point of reference, I wear 42 Fiziks (road) and 42.5 Giros (MTB), but purchased the 43 Shimano boots. They're a little roomy, but that's better for your feet than an overly snug fit, especially in cold weather.
Thank you for your feedback.
You have already submitted a vote for this review.