Not trying to one-up anybody, but I've got 42 stitches in my left hand between the thumb and fore finger. The tendon that works the thumb was exposed; fortunately the prop arc was parallel to the tendon or I could have lost the use of my thumb. Reason? I trusted the other guy to disconnect the battery while I made a change in the Tx set-up for him. The plane was on a workstand and it was my hand or my face.
Walt