I'm still 50/50 on going tubeless. I'm a bit worried about the extra weight on a 29er and also the mess when swapping tyres. I'm not sure if its worth the ball ache? Currently I use Panaracer Flat-Away kevlar felt liners. I've only had two flat tyres ... one was a puncture before I used the liners (and the reason for buying them), the other was 4 months later when the Slime Skab I used for the puncture repair failed. I think thats pretty good going ... is the weight, expense and mess of tubeless worth it?