The vast amount of butt hurt people whining about the cross guard light saber in my guild, the forums, and other places has really shocked me. (Guess people really hate change) So when I found this video on youtube by a swordsman who looks at the practicality and functionality of a actually cross blade light saber sword I felt it was necessary to share it.
There is also a video on the practicality of a double bladed light saber (sword rather but same thing)
Double Bladed Sword (Lightsaber) video
TLDR: Cross Guard light saber isn't that bad, in fact it might be useful.
TLDR: Double Bladed light sabers are fairly useless and a regular light saber or pole arm is better.