Interesting that Chapman chose laminated bamboo. I've always understood that bamboo, whilst very strong (weight for weight, it is pretty much equivalent to steel), has natural flexibility/compliance and can withstand repeated bending stresses and recover quickly. That's why it was traditionally used for fishing rods. It has also been used to make violin bow sticks, which again must be light, flexible and recover swiftly from flexing. Rigidity doesn't strike one as being one of its main qualities, although I expect laminating can be used to achieve that. It would require many layers of lamination to make something the size of a bass or a Stick because bamboo is hollow, with thin walls. That would likely make building guitars and basses from it very expensive.