I had done the same up until recently when I was nicely asked not to by a person who worked for the church as part of security. What I was told made sense to me, that in fact it was a considered a concealed weapon due to blade length. The reason for the security measures was because of the few cases in the recent past of church shootings. What he was doing was not to shun me ( as he was of Scottish descent himself) but simply to protect others in the congregation, and I totally agree. I do still carry a pocket ( swiss army ) knife in my sporran ( legal blade as well)