I've been using them every weekday for the past thirteen years, in all weather, for something like 40,000 miles. During this time, maintenance has consisted of a yearly top-off of grease. We seldom get subzero temperatures here, but they work fine in them. The sole drawback is that the front brake takes a lot of hand pressure for maximum braking. On the other hand, the higher grip forces on both front and rear make it easier to modulate braking on ice and snow. They are not for everyone, but there is no way I would consider a bike with rim brakes for anything but recreation.