This is what I was looking for. I'm glad that UT Kilts made a contest to have videos of their kilts in action and that you submitted. A gift card is also a good incentive.
I see from the video that you have a belt on and are wearing your kilt above the hip bones. That seems to keep your kilt from slipping down (unlike the gent in the green Standard II). The top of the pleats seem to stay wrapped onto your bottom without dropping down thus the hem interfering with your calves. I observe freedom of movement in your legs (side to side as well as front to back) that can assist in thrusts, blocks and turns. The video wasn't long enough to indicate that your kilt twisted to one side or the other, and you stated that you were holding back due to lack of protective gear. Even if you don't do another video, let us know how the kilt held when you get into a full fledged sparring.

Ps. I hope there is more "kilted while in motion" videos (other than pipe bands marching). Thanks and good job.