Sorry, but you're wrong. Disregard the light/lazer physics and narrative stuff altogether.
What I'm talking about here is the crossguard being "laser" as well. What happens when you use a sword? The sword swings around, rotates in the hand, in all manner of direction. With that design, if you cock your hand/wrist at any angle, the crossguard performs a nice amputation about midway between the wrist an elbow. If you'd like, I can shoot a short video of myself with one of my broadswords as an example.
I've got almost 20 years of swordfighting under my belt, and about 15 as a sword maker, including film props. I started my apprenticeship when I was about 12. I made my last sword in 1998.
Some pics of the old shop.
The old guy in the wheelchair was my teacher..as well as everyone else in that group.. Was the oldest living sword-maker in the US, possibly anywhere else. He passed away Februrary 28th 2012 at 90 years. He started making swords during the Korean war. The guy in bright armour behind him? Dragon Dronet, founder of
Renegade Effects, and friend to Bob Anderson, the original Star Wars sword-master. The hot Asian chick behind him? The old guy's girlfriend...
we're a bunch of weirdos.