SAK Air Traveler (Wenger) on person through security. I taped a small piece of paper to each sided that reads, "no knife blade" In Seattle, TSA person only asked if I had broken off the blade. I told him they make a non knife and he was fine. At O'Hare, TSA person inspected every tool, even poking his finger with the mini screw driver.
real blades are in checked luggage, in side pockets inside main compartment, usually securred to strapping. No problems as of late. I like to put them in the same place, so when I land and retrieve my luggage, I can immediately reach into my luggage and obtain my knife before leaving the airport.