Only combo blade I ever saw a use for was a Spyderco Rescue model that was stolen from me. It had a blunt tip to slide under a seatbealt or clothing without cutting the wearer, and the first (tip) inch of the blade had aggressive serrations for cutting belts, etc. Other than that I don't care for serrations. Yankee mike mike victor.
"Don't let macho be your epitaph."