In reply to rodgit: FWIW I managed to cut a good condition Wild Country 12mm dyneema sling more than half way through via 'misuse' in the Alps a few years ago.
I was clipped directly to the sling which was over a rock spike. I then staggered/slipped, shock loaded the sling which resulted in it being cut.
Unfortunately no photos as we knotted it and used it for abseil tat on our retreat from the route.