Kato wrote a review of WTB Nine Line 2.0 29" TCS Tire on January 16, 2014
Familiarity: I've put it through the wringer
Bought these for some mixed gravel grinding and xc riding on the fully rigid 29er. I love the tread pattern. Very smooth rolling and yet great traction all around. Clears mud quite nicely too compared to many fast rolling treads. Problem is the casing is rather weak. First ride, on gravel roads, I pinch flatted twice (I haven't pinch flatted in about a decade). Tires were run at about 55 psi and I only weigh 160. I also got a sidewall cut on one tire, a separate incident from the pinch flat. Tires are narrower than a 2.0 size. If they'd make these things more robust and keep the treat pattern they'd be super winners. The pinch flats and cut occurred on gravel roads. Not even bashing around on the singletrack. Granted, they were rocks roads but still. Haven't had any similar incidents with the many other tires I've used.
Had to put a boot in the tire with a sidewall cut. Still using them but carry lots of repair materials and a few tubes to get me home. Still love the tread but always have flatting/puncturing in the back of my mind.