Some time in 1984 Uncle Ron signed the Religous Freedom Act. It states that implement of religion could not be confiscated. I'm a pagan amongst other things and my Sgian is consecrated. Cops can't touch it. The one hitch is that I have to be going to a function of some sort. So I wear the sgian all the time and the dirk stays home unless I'm going to a function.
The reality is if you treat the cops with respect they'll generally do the same.