I like his presentation and the video quality...obviously knows what he's doing...you can tell by the ease with which he uses the various tools/files... (every race tuner does it a little different, but the ideas are the same), but (probably for the sake of brevity, I guess?)...it is a tad vague as far as details are concerned--e.g, most race tuners use a 3, or even 4 file progression (panzer, bastard medium cut, fine cut) on the side edge, for instance (for a new ski, or when changing a side bevel angle).You would use a panzer rough cut 1* more than desired side bevel, followed by the other 2 or 3 files at the desired angle. No mention of a diamond stone progression on the sides, and perhaps less obvious to casual viewers, no mention of the delicacy needed by the tuner when setting the base edge (best done with a fine file, light pressure, and at the most 3 passes, lapped progressively...it cannot be stressed enough that it is VERY easy to over bevel the base edge!
I could go on...Do more research on line, and don't practice on your "good" pair...save those for when you get the feel. There's a lot more to a race tune/all mountain tune than this...
I would certainly advise people, as a race tuner, to not base their race tunes soley on these videos...I would also advise the beginning diy tuner to dig deeper as well...(things like rounding the topsheet and sidewall planing/sanding take a lot of practice to get right, for instance)!