Got one yesterday - first in a very long time. Only maybe 200 miles on the tire. Riding my usual route, which I'd ridden just the day before... A slice right across the tire, between 3/8" and 1/2" long, tire saver didn't help on that one! Probably curtains for that tire. This circular route keeps me pretty close to home, I've not bothered with a spare, so I had about a 15 minute walk, in cleats...