I'm looking to buy a new folder but I often have to travel to Chicago and they have a two and a half inch blade restriction. While this is crazy I am looking at a Spyderco Dragonfly so I can stay legal. It seems like 3" is the limit in a LOT of places while certain local jurisdictions just outright ban pocket knives. Is this kind of stuff enforced or do they just pull it out as an add on charge when a crime is committed? I was really blown away by the Idaho state law.