Luke is a bigger unit than most though (no offence luke - ), so the extra weight is less noticeable as his tree trunk legs are able to power through. In addition it looks like he does run his tyres quite soft so he can do those big sidehops...
@RossBurnside - I've slowly been bumping the pressure up over the past couple of months as I've been trying bigger stuff, it does take a bit of getting used to, but certainly wouldn't be running them less then 40psi now. I don't think they pinch 'that easy', we're saying they pinch every now and then (as every tire does). I used to pinch my high rollers / der Kaisers at 20 psi regularly, so it can happen with any tyre.
Answering the post's questions, when you consider weight vs. puncture protection vs. rolling resistance of all the available tyres, the conti's stand out as the obvious winner (IMO). They do seem to work well on 24" long bikes too (as Ross has demonstrated) but I'd think for regular use on some slimy rocks on the side of a hill, there may be better options.