But that is fundamentally at odds with how real fencing works.
If you are in a high guard I can effectively block it by countercutting from a low one… (or a high one) or masterstrike by cutting from a high one - zornhau masterstrike is just a conventional cut with good footwork and structure so that it binds the opponent’s weapon on the ‘cover’ side of the strong and simultaneously hits the head. … or the Zwerchau which cuts horiztonally around ‘tip behind head’ to bind and cover while striking through to the head (the last strike(s) of the Fehler device).
Any of these cuts can be thrown from any guard, and often the guard selected is an ‘offered’ opening to cause a predictable and defeatable attack into the known ‘shape’.