I arrowed a nice 8 point last year using one.
He was cruising around and I had some does under my stand, and hefollowing one of them away from stand. Neither buck nor doe grunts would get him to come back. Out of desperation, I bleeted and got the doe to come back. Seepassed right under my stand and the buck followed her,giving me a 15 yard broadside shot.
I may never get an opportunity to use it again, but I'll definately keep it in my bag of tricks.

nope i have one and never use it because it doesnt work for me .......

I use a fawn distress call one time just to see if it realy works had some doe's come running in,but that only happen twice. But i will tell you it work great if you need to know where a squirrel is , drive them crazy they just start barking and won't shut up.

I use a fawn bleat, and it works sometimes. It will stop a running doe, gives you a couple seconds to stick her. As far as bucks, I keep quiet. If I dont get a good shot at him today, mabe tomorrow.