If you go back a few pages, you'll find a 3D model of the X-Saber Jon Hill made. The image may not be online, I think. If you have the game Jedi Academy, you can download an X-Saber for yourself and play with it. It'll help you get an idea, since Jon Hill got the X-Saber just as I had pictures it.
Its basically a saberstaff, with Two blades on each side, in a V-Shape.