I went out for 25 Friday evening with the CX0 tires and had a great ride. I mounted the Schwalbe Winters for Sunday's 45 mile ride which kinda was grueling slow and arduous with the Schwalbe Winters. 99.99% of the ride there was no ambiguity as to if I might need them and their heavy clackety studs. The roads were far from nice but the shoulders weren't icy. Being kinda fearful of black ice I left them on and went out this morning for another 23 miles. Mid 50's, totally didn't need them. After about 200 miles with them I can honestly say I love knowing that I have them and I hate using them. Thankfully it only takes 10 minutes to swap tires around. I just remounted the CX0's for tomorrow.