I know the history of 3 pre-1900 lemonsqueezers. One (3" barrel) was pocket-carried by a homesteader. One (5" barrel) was owned by a doctor in his bag while doing rounds. One (5" barrel) was kept by a newspaper publisher/editor, and carried in the aftermath of the County Seat Wars.
The longer (4-5" barrel) tucks nicely behind a belt, in a boot top, or behind a work apron.