Open or concealed carry of a knife, fixed or folder, is OK upstate. Carry of any knife that appears to be designed primarily for defense is illegal. You might be able to talk your way past a cop or two, but in short order your knife is going to be confiscated and possibly charges filed for misdemeanor possession of a weapon. If you're doing some hiking, camping, hunting, fishing you're fine with it on your belt. For open belt carry I imagine anything with a blade much over 3 or 4" that doesn't look very utilitarian/traditional is going to get you into some trouble.