Not sure the denomination you reference but guessing it's one of the Christian ones.

If I remember correctly their main dude lived unbifurcated.

If it's a denomination that tells folks what they can wear and not wear....there are other options.

Have seen many posts of guys going to their church proudly kilted. Even became a thing with the LDS. Have a collection of pics of kilted LDS guys proudly kilted at their church/ward that have posted on X Marks.

If their main dude happened to come back and be sitting in your church don't think he'd mind if you were kilted.

Go for it.