Had a friend do that. Then try and give me a pat-down in front of people I didnt know. That didn't go over well with me.
It is highly doubtful that I would regard the individual who tired to pat me down as my friend anymore. That would be a relationship breaker...it's nobody's damn business (including my spouse's) whether I am carrying or not. The only exception being in a situation where the legality of carrying is an issue such as schools, airports, court houses etc. or in those states where signage is binding and the question is being asked by a lawful authority in the execution of his/her lawful duties and that doesn't mean friends or spouses. In other words MYOB... concealed means concealed.