I have these tires on a Novara Big Buzz. I rode them over 1,000 miles without incident. What I noticed about them is that the rubber is very tough, and doesn't nick at all. The only thing that has made a mark in the tire is a machining chip, and it did not make it through the shielding. Just plucked it out and rode.
These are on sale right now at Nashbar for $25 for 26". Great deal.