This might sound funny, but the knife I use most on a daily basis is my little Victorinox Classic penknife. I use it at work (I'm a certified court reporter currently working at university captioning for deaf students). It helps me screw in the realtime cable from steno machine to computer. The scissors cut paper and are good for minor grooming duty, as is the file. The toothpick I use to clean lint out of other folders. I rarely use the knife blade or the tweezers, although I once cut an apple with the blade. I always carry a Spyderco, Benchmade, or Cold Steel for cutting fruit, twine, string, hard plastic packaging, opening mail, boxes, and "just in case"
My Minibuck on the keyring is a backup "little" blade. Where I work, even what we consider a benign-looking folder (Calypso Jr., Dragonfly, Jess Horn lightweight, et. al.) can appear threatening-looking to most people
So mostly my one-handers ride along quietly during the work day. Jim. P.S. Geez, did I ramble ... !