Oh man, the geekery. That's a lot of sideglow fiber optic. Still not going to be super bright... but very cool.
You can get just the cable at this place, I've ordered from them before and even though their web site if from like 1996 they're pretty helpful on the phone-
Also, I THINK you can fake a sideglow effect by taking clear plexi and sanding the surfaces, then edge-lighting it. Perhaps you could mold the clear plexi to follow body contours as well?