That is awesome! I wish there were events like this where I live...
Oh and about the stabbing with samurai swords...I believe that is a yes and a no.
Yes, technically you can stab with a samurai sword. However, its effectiveness becomes extremely diminished. The reason why the katana is praised for is because of its sharpness. The sharpness of the sword is usually seen when a samurai takes horizontal, vertical and diagonal swipes at the target, not in stabbing. Hence why when one practices with a samurai's sword, they don't practice stabs nor it is in their set of moves; it is usually meant for swipes. But of course, you can remix it for yourselves . I guess Ubisoft either wanted an authentic samurai moves, or couldn't figure out how to implement stab moves w/o it getting clonky...