I haven't used it and dont know of anyone who has used it. The only advantage I could see you having with that is that you can make the nose without moving anything except a finger...... but the disadvantages would be that you probably only get one call... over and over... whereas you can make diffent volumes and lengths of your call with that actual buck roar.
It's only $15 though, so if you got the money and dont mind spending then go ahead and try it out...... Then you can let all of us know