We talk about CC here all the time. Even though OC is the topic, CC is a legal reality in many cases, and the laws can make CC preferable in some cases (except for having to have a license, that is).
Are you licensed? Is church carry legal in Iowa? If your answers are "yes, and yes", then carry away!
Edit to add: there is nothing that is profane, immoral, or sinful within church, that isn't profane, immoral, or sinful outside the church.
I believe one of the greatest affronts we could give to God would be allowing His children to be slaughtered without acting to stop it.