Yes they are real and you can buy one on amazon. com for about $40.00.
You can not dual wield energy swords in halo 3 but there are rumors that you can in halo reach.
There is NO duel-wielding weapons in Halo Reach. Double energy swords is impossible.
You can't hold two energy swords unless you use some kind of hack
No.
bombs are actually more dangerous but swords were for real men.
yes WARNING they are real swords so please do not use like a toy
Energy swords 10 uses/charge
Sadly no
Swords dance because it highers your attack sharply and focus energy just makes critical hits come more often.
Finding them and wielding them
No, but they were before fencing became a sport. Since they no longer have sharpened edges or tips, they are not considered real swords, and are called 'Weapons'. Calling a Foil, Epee, or Sabre a 'Sword' in a room full of fencers will only result in a room full of glares or scoffing. Fencing swords are not real swords because when they are made, one thing is kept in mind, the sharpeness of the blade. The blades are not that sharpening as compared to the real one. After all you want to use it for home decor purpose and not for cutting or thrashing.
You carry a real sword with you, you make the cot-dam rules.