We didn't, but my mother was a childbirth coach when she was younger (and even up to a few years ago), which seems to be close to the same thing, different name.

She was invaluable to me during labor & delivery. There were times (when I was laboring at home, or on the way to the hospital) that I wanted to yell at her to shut up and stop telling me to breathe, but once my epidural stopped working she was the one helping me breathe through them (DH was holding my hand and rubbing my back), and when I was pushing she was counting (and holding one of my legs, lol).