I made one, and messed up a step, and it simply collapsed the tube, not snapped a limb. I'm planning to try again, just trying to get the weather and my tools to comply. As all I have available to me is red oak and PVC, PVC seems the safer to work with.
Besides, many use fiberglass, and fiberglass is so not trad it's ridiculous. It's the pot calling the kettle black in these forums.