Again, your applying your personal mental template to the world. I fly often. My carrier however is a Morane-Saunier MS.502 Criquet.I've even been known to brandish a P1 Walther at ultralights and seagulls. I am by avocation and part time employ an archaeologist. I often fly into some pretty rough areas in our Los Padres wilderness. Torn clothing? If you've ever bushwacked hard chaparrel you should know about torn clothing. I have never differentiated survival from daily living, not in the Coast Guard where I spent time with the Inuit and pushing lifeboats, not on a hundred and six field excavations from Alaska to Wyoming, not on dozens of horsepacking trips. My world view, based on experience and that of others is that a PSK is a last ditch assembly of tools to replicate in a minimal kit those same tools and supplies we may lose in a larger kit.