The last time I used my FAK came about as a result of lending my leatherman squirt P4 to someone who "needed a knife or scissors". The person accomplished the task for which the knife was requested -- but in doing so managed to get a cut on the middle finger. I then proceeded to provide some antibiotic ointment and a large band-aid from my FAK.

The moral of the story is "no good deed goes unpunished". Afterward I had to thoroughly clean off the blood from the blade of my squirt P-4.