here's a thought, based on a lot of xc ski races with mass starts and other nonsense and carnage on fiberglass, carbon fiber and aluminum...
you can bend an aluminum pole back in to shape and it will still work. carbon and glass are lighter, but if you do go down, or it falls, or something falls against it, it is very easy to create a stress point that eventually leads to catastrophic failure.
personally, i'd use aluminum (or ti) for av probes, trekking poles, and the like, and save the carbon for day use, recreation, racing, fast ascents and other things where weight and stiffness are the driving factors and the potential for carnage is extremely low. carbon isn't as much of a risk as it used to be ten years ago, but it's still more fragile than aluminum.
-sean