I know it varies from state to state but I believe that neck knives may present some legal problems. In Wisconsin we don't have a law that specifies the length of a knife that is legal to carry. It forces prosecutors to examine whether the tool is a pocket knife or a concealed weapon under the totality of the circumstances. Unfortunately it puts police officers under the same constraint.<br><br>It is easy to envision a simple pat down frisk where the knife is found. I personally believe most officers would make a decision to arrest after that. I would rarely charge such a case, but the issue is out there. Whether a legal case should be won or lost is really irrelevant. Once you've become embroiled in the legal system in most ways you've already lost. Court is a pain in the butt, expensive, and an insult to the common man's ego.<br><br>I carry a pocket knife all the time, in and out of court. Most of mine have a pocket clip and are pretty modest in size. My buddy is a dentist who has a pretty big pocket carry knife. I keep telling him that if it gets found during routine police contact he is probably going to get handcuffed and maybe arrested, but he laughs me off. I think a neck knife is even more problematic.