I'm a bodybuilder, but I played around with WSB for a bit. The chains are great as are the bands. Have you tried them yet?
I love all of the info that Louis and Dave Tate provide for us. Being a bodybuilder I thought I new some information, but I learn everyday from reading Louis, Tate, Siff and Zatsiorsky. I think I know a lot and then I realize how little I really know.
Have fun with the chains and just laugh at people. They really do not understand anything like what the WSB do. Also make sure you are doing the box squats right by sitting back on the box and make sure to come up with your hips/glutes and hams. Sorry for the babbling, you probably already know this stuff, but I have to tell myself that when I do box squats too. Good luck.