I've worn the longer socks during a few wet walks, cycles, and runs, they are extremely comfortable and the waterproofing works very well. The sensation of having water inside your shoe, yet having dry feet, is a new and welcome feeling.
I've been trialling both the long and short length socks for canicross. Of all the 'waterproof' socks that I've tried, my 360DRY pairs are the ones I've been coming back to consistently as they're soft, warm and do a fantastic job of keeping my feet reasonably dry.
Amazing socks, struggled with frozen feet for so long then came across these! The best thing ever for cold wet wintery running or walking and so comfortable and easy to get on and off.