@baggyferret: There are some nasty rocks and roots, but not too bad on a FS bike.
Also, tire tech has come a loooong way... I remember doing trails like this on my hardtail (around ´94-´97) running 3.5-4 BAR front and back to avoid pinching
@coletassoft: yes very true, tyres take so much out on the trails and 95% just shrug it all off! i use tubes as i found sealant etc very messy and not too reliable out miles from home, i run about 25-30psi and don't have too many problems now but years ago it was different story
@coletassoft: i'd say try it, some people get on great with it and some of us dont, i swap tyres about a lot and have quite a few bikes so it worked out expensive and messy for me, i do many miles a week off road and punctures are not common and i don't run low tyre pressures so i have no need for it.