The first form consisted of the following:
Step forward (North) with right foot and execute a vertical cut. Repeat.
Step backwards with left foot, execute a vertical cut. Repeat, bringing you back to the starting point.
Side step to the right (east) while facing ahead (North) and execute a vertical cut. Repeat. Side step to the left and execute a vertical cut. Repeat, bringing you back to the starting point.
The second one looked like the same techniques as the first, but with more steps in more directions.
The third was a series of vertical, diagonal, and horizontal cuts standing in place and at the end, in what appeared to be long stances of two different lengths.
Four was very different from the rest and had a number of stances where the right hand was held out in a "halt" gesture and had a kick. Lots of turns and spins, both one and two handed technique. Loos more reminiscent of what little HDGD that I have seen.
Five looked like the latter half of number two, but incorporated thrusts, long stances and a horse stance.
Six had some one and two hand cuts, a drop to a kneel, and upward cuts.
Seven had a kick, a number of high horizontal cuts (presumably to the neck), a goodly amount of turning and wrapping the blade around his torso, and he ended up facing a different direction than he started.
Eight was vertical or diagonal down cuts to each point of the compass.
With the exception of number four, none of the forms had any flash & trash. None of them had any 'unrealistic' techniques. I was a bit surprised at number eight being almost as simplistic as number one. One and eight looked less like hyung than they did like drills, but since I do not know the lineage of the forms, I will not comment one way or the other on it.
The man seems a bit stiff in the upper torso and arms and his footwork is not all that crisp, but he is not claiming to be a kumdo master or some sort of samurai, so I won't go into a critique of his skill (seen better, seen much, much worse over the years). I am trying to avoid criticizing him directly because he is not making any claims of mastery and is not part of this discussion.
If the guy in the video had been a Korean master with impeccable technique performing them in a dojang, I would probably be saying, 'looks good, but I don't know the lineage' and have left it at that.
All that I can say about the forms is that through number seven, they seemed to have a graded level of complexity and/or difficulty as they progressed. The selection of techniques did not look outlandish, nor did I see any techniques that looked horrendously wrong. All things considered, the forms look like they could be part of an actual curriculum.
No idea whose though.
Daniel