"The biggest problem with it is when you're swinging the sword around is you have the tendency to actually touch that part of the sword (the cross-guard)," Kulla said. "And when you make some of those bigger swinging motions with a metal sword and a cross-guard brushes against you, it really doesn't matter … when you're doing some of those fancy moves, that cross-guard is going to come back against the arm of the person using it."