Did you have one of those brightly-colored handles? If not, we might be able to work out something.

Where I live there's no practical limit, and, believe it or not, on weekends I often carry a Lone Wolf Harsey tactical, which is pretty huge... but it doesn't look different than any other clip-folder in the pocket (unless your pants are tight).

However, I often travel into a city with a 3" legal limit....