Our church also uses the name Jehovah from time to time.....and we sing the song "Jehovah Jirah...". In fact, we had quite an interesting sermon a few months ago about the history of the name Jehovah, Yahweh, and "I AM".
I listen to church sermons on the radio from time to time (I do a lot of driving in my job) and I hear it on there too. So the JW's don't have the corner on the market........although they like to pretend they do.