Burgundy micarta Jester, carried on my key ring all the time, but rarely used.
Kiwi, if I have pants on, one of my many Kiwis is in the watch pocket, and is used fairly frequently in the office for opening letters, packages, and bag, and less frequently for food prep. Another Kiwi, this one all stainless, is my "desk knife" at home and also opens mail and packaging.
PE Stretch, modified with canvas micarta inlays replacing the kraton, carried in left rear pocket on work days, used for food prep both there and at home.
Schempp Persian, modifed with stag jigged bone scales, carried in left rear pocket almost every time I leave the house on a non-work day.
R2, just added, getting a "test drive" as possible replacement for the Stretch. It has its work cut out for it, as the Stretch is very, very good.