Hi.
The Roman sword was the primary weapon of the day in Christs time on the earth The disciples open carried even in Jesus's company. When Christ was being arrested Peter drew his sword and struck off the high priest servants ear.
"Then Simon Peter having a sword drew it, and smote the high priest's servant, and cut off his right ear. The servant's name was Malchus." (Matthew 18:10).
Christ never said, Peter, how dare you open carry a sword in my presence! Christ never claimed love not war will win out in the end? Christ never called for a sword ban. Christ merely told Peter to; Put it away Peter, now is not the time!
"Then said Jesus unto Peter, Put up thy sword into the sheath:" (Matthew 18:11).
Thats why I would open carry in any church where it was legal to do so in the USA. Haz.