I take this as settled. I can see what the person doing the presentation meant, but the statement was bold to say the least, even if we limit teh scope to weapon practices. To be minimally accurate he could have said "one of the few" rather than "the only". I also challenge that "Jogo do Pau" can be considered a martial art, but that is another story.

Maybe the person stating this was thinking of weapon practices (since HEMA is usually associated with sword fighting) - in that context, would the statement hold? Is there any more restricted sense in which the statement could be true?

I already get what you are doing, thanks. If you can get a photo it would surely add some colour the the answer :-)

I'm curious about the type of belt you use. Can you share a picture? You approach is nice but you are limited on the combinations using both legs you can practice, so you would mostly practice one leg at a time. Maybe using the the foam gym mat with your belt is a winning combination?