I have approximately 800 miles on these tires so far, with a solid mix of on and off road use through dry, rain, and snowice mix. They have held up to everything I've thrown at them including a nasty New England mix of wet icy slush under snow.
I've been finding myself taking some more off road paths on my way home just so I don't feel as if I'm wasting them during my commute. They are slower than my summer tires, hold up against the glass and garbage of my commute and I can go where ever I feel like. It's a refreshing change to be able to deviate from my standard route.
Used at 5055 for good conditions, 3538 ish for bad conditions.
I have two pairs of these an older pair I use for commuting, and the newer ones I save for races. They are awesome. I have heard that the PDX tires are better for extra-muddy conditions, but I prefer to have a more all-around set of tires, so these are it until I'm more of a Cat 1-2 kinda guy. )