This guy f*cksNo sword weighs as much as this thing. I should know, I own one of the first run of these from back in the day, and I also train with longswords.
Swords are light. This thing is heavy. It is completely unsuited for any kind of actual use. And no, a twohanded sword doesn't weigh anywhere close to 10kg. They're 4-5 on the far, far end. You simply can't swing something that weighs that much with any kind of effectiveness.