I've never seen one. And I don't know if anyone has ever asked. It would be interesting to see how one reacted when there is loud demonstrative worship :)
I'm sure that would be acceptable. There very important my wife has one. It's a great church. I'll ask somwome in church for you tomorrow.
I'll ask tomorrow in person I know there important. My wife has one. I don't see why there would be any issues.
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