RE: calling?
I personally haven't tried that Primos call. I'm sure if you practiced with it a little, it would do the job. The key to any mouth blown call is practice, practice, practice. Then when you do take it into the field, you will be confidant in your ability to make it happen. Believe me that goes along way. If you think you truly have what it takes, you will be more willing to put forward the effort.