Off topic, but ill ask. How does Fiore's dagger element of his style stack up against modern knife combatives? Lets say what ever is currently taught in the military.
Most medieval dagger work has small similarity to modern knife material, which often as not hails from a Filipino martial arts (FMA) background or, sometimes, a Sykes/Fairbairn/Applegate/Styers linage.
What you have to understand is that medieval dagger material evolved in a different context. Whereas, today, most knife work is predicated on short "pocket knife" sized blades and light, modern, clothing, medieval dagger material was developed for the medieval noblesse and/or knightly environment. The system, regardless of Italian or German, almost always uses a long, point oriented, rondel knife (which may or may not have a meaningful edge). It was predicated to heavier clothing appropriate for "
The Little Ice Age" and/or use against someone in armour; hence the emphasis of the point over the edge. Techniques for use of and defense against evolved in this context.
That's the thing about knife, sword, stick, empty-handed systems, &tc. They all evolve in their own context and the resulting system may not be perfectly adapted for your modern use, whatever that may be, be it military, LEO, or civilian self defense. I've written (ranted?) about this before here in this forum but, quite literally, everything about the context goes into the system. There's a reason that the Spanish Navaja is shaped differently from the Rondell or the Balisong. Clothing, social restrictions, legal restrictions, theories on fighting and restraint, requisites of dueling versus "fighting" (whatever they may think that is), restrictions on social classes, &tc.
all go into what makes up a fighting system.
If you want to study knife fighting for a modern self defense reason, then just go find a modern school teaching modern knife fighting. The Filipino systems have frequently adapted well to modern U.S. environment. My friends tell me that Modern Arnis (Presas origins) is quite well adapted. However, if you're looking for something with a historic flavor, then knife systems from the Middle Ages or the Renaissance (or somewhere/when else) might be interesting to you.
Peace favor your sword,
Kirk