I've seen that video a few times, it's gotten the guy who made it in the first place in trouble with NATE(National Association of Tower Erecters) as well as OSHA. Free climbing isn't allowed, hasn't been for many years. At one point, there was an argument for allowing free climbing because the climber wastes so much energy clipping, unclipping, reclipping, etc. Didn't hold much water then, sure as heck doesn't now that there's rail and cable sliders on every ladder.