You bowyers know far more than I about stuff like this, but aren't the veneers simply for looks anyway?
I have always thought the core wood and the glass are actually doing the work and affecting the performance. Do the veneers themselves actually have any impact on the strength of the limb? And being as thin as they are, does the weight of the wood used have a measurable affect on performance?
How much does the use of a veneer change the draw weight of a bow? For example, if one bow is built with clear glass over bamboo cores, and another is built using the same cores but with a pretty veneer, how much affect does that have?
This is something I haven't really thought about before. But now you've got me wondering...