Also, since you really seem to know your stuff Ace, what are the general legalities involved with carrying a blade (type, features, size etc)? Obviously, laws would vary from state-to-state but I'm just curious in general.
I agree with harvey, it's just too hard to make any generalities when it comes to knife laws. Unlike firearms, where some states have pre-emption laws (e.g. Pennsylvania), I'm not aware of any such thing when it comes to knives. The best advice is to check out the laws in your local area (or intended destination) and act accordingly.