In Canada for attestation you can either swear on the bible or take a "solemn affirmation". Same during military trials. Given that I often preside over summary trials, I have formed a habit of finding those who have "solemnly affirmed" guilty as the Godless heathen are more likely to be lying!
We once had a clerk who claimed she was a white wicth and was afraid of bursting into flames if she stepped over the threshold of a church. We tried deseprately to entice her in on several parades, but nothing doing. There was big $ riding on that one, too!
Back in the days when the current RSM was a bit of a lad, he somehow managed to convince the powers that be that he was an "Orhodox Druid", such that he ended up with the same stamped on his dog tags. Mind you, this was the same guy who broke into the local amoured unit's band room one noght and crapped in their tuba! Oh, happy days!
Royal Arch? When you going to step up from the minor leagues and apply for the Knight's Templar? If you play nice with them for a while, next thing they'll be whispering sweet nothings in your ear about small and oddly-named "clubs" the like of which few are aware. Mind you, you'll probably have to go Cryptic for a while forst. Some good dirt in them there dimly-lit conclaves!