The restrictions in the Texas knife laws, as I understand them, are for normal EDC but when the person is 'camping or performing outdoors activities', such as yard work etc., all restrictions are off. That being said, I would not use a dagger anywhere but at home in a collection. I would not want to be the one trying to defend the use of a double edged dagger with double guard or a true automatic release knife to defend my house. It would be much easier to defend the use of a gun in a court of law regardless of what the person is illegally trying to do to you or your property.