Anything over 7" goes in or on my ruck, my EDCs ride IWB @ 4:00.
I have pancake kydex and Leatherman Pouch sheaths (built as lefties) for all my EDCs. I wear them IWB @ 4:00. I occasionally I add a Bladetech belt loop, but mostly just tuck em in. The swell of the handle keeps it from falling down, and just remember to remove it prior to using a porta-potty.