I'm loving this thread.
As to the original post about the myths, I'll go along with them. Keeping in mind, of course, that there are exceptions to every rule. As for those with real world experience, it's a larger culture than you would think. There are a lot of knife guys out there. They do a lot of contract work in dangerous parts of the world, they teach Special Forces men and for hire contractors working with/for many of our governments. When they're not abroad, they're home, teaching groups of people, some civilian, some protective services, everything blade.
The people who teach these things, sooner or later, make it to the old world Philippines and train with some real old school, old world, Masters. A lot of them having been doing so for many years. There is a lot of training. Clothing, every kind imaginable, is used at some point, as are slaughter houses, as are makeshift weapons, as are things used to defend against a blade. These people deal in real live war in hot spots across the globe.
Knife culture is deep. They don't leave anything to theory. They can't.