Even though it is completely legal to wear a fixed blade knife visible on your belt, the local LEO's don't like it and have been known to confiscate a blade if they didn't like something about the meeting between themselves and the citizen.
Many years ago, I wore a Case XX USMC knife to town one day to do some shopping with the wife. As we were walking out of the membership warehouse store an LEO drove by and actually stopped his vehicle and made it completely clear that he wasn't happy that I was wearing such a weapon in his town. He didn't say anything, but the look he gave me had the feel of a glock, if you know what I mean. I havn't worn a large knife or any knife on my belt since. I do carry a good linerlock, but reserve my fixed blades for the woods.