Hi Hamish
I look at the little video and see a simplified and 'pared back' version of some trends in modern Nordic/Scandinavian, with a touch of older tying.
The plastic tube and body tying could be from a recent Frodin tying. As could the use of superglue. That bead looks like the front of a Loop Bottle tube. The finished fly will be lighter and none of the issues about fitting tube and hooks to the bottle. However, dressing on the bead can be just like tying on a tube. And to demo how, he uses two bucktail colours - imagine using a mix of orange and yellow with black over and call it a wullie gunn ? He demonstrates trimming bucktail using a blade - an excellent technique I use on metal tubes, be very careful doing that on plastic. Oh and you have to know how to stack bucktail, how to spin it around the fly - plenty of technique and material knowledge needed
Personally, I'd demo a 'handed' fly, tied with a soft layered wing, and run a hackle in that bead - fly done! (Just like I tied on bottle tubes.)
Meanwhile, having placed his little advert I doubt we'll ever hear from or of Juhani again
Magnus