I've got a Kukhri bashed out of a truck spring in Nepal (allegedly) that sort of does everything pretty well.
Other than that, my 4" folder that I've sharpened so many times that the blade clears the handle now.
It's illegal to carry any of the above in Oz. They have, and will fine chefs who stop at the pub on the way home from work, as they are not proceeding directly to or from their employment.
(Have a bunch of dollar store box cutters in gloveboxes as a "just in case" need to cut a seatbelt, or a bandage and are away from anywhere.