Glad to know there are others, I contemplated if that was a bit too odd for me to share! 
I love bentonite clay but never occurred to me to brush my teeth with it! Do you use it in combination with toothpaste or just on its own?
I’ve been hoping to get down to only one kind of Castile soap, but with the hard water where I was just living it was tricky… I don’t technically brush my teeth with it although I brush my night guard with it so I’m acclimating to the taste. Not sure I’ll do the one soap for everything long term, but it’s nice to know it’s possible and not really all that awful.