Jim - interestingly, I generally always carry 2 as well. Aside from scratching spots and booting, I actually tried to use my to arrest a fall for the first time on Friday. We were on a SE slope that was way too warm, and the skin track broke out and I started sliding with about 3-5 inches of wet debris relatively medium speed. I plunged in both whippet picks, but the bed surface was so wet that they literally did nothing. Like a knife through a slurpy. I just yelled "this sucks" and slid until it stopped 30 feet later. End result - whippet not exactly efficient in wet bed surface. Better avoidance is not to be on that slope in the first place (which I quickly remedied).
AK - glad everything turned out OK. Scary stuff.