Having shot for a long time, both hunting, field, 3-D and target, I used a clicker on a target bow and understand the principle. I no longer target shoot, and would not use one on a hunting bow. My personal choice.
It was necessary to make some changes in my shooting style from target to hunting, and going back and forth drove me nuts. It is difficult to avoid developing bad habits. In the 1980's I picked up a book by John Schulz, and then his DVD. It explains in detail how to shoot in hunting situations as Howard Hill did. If you have read his books, or watched the DVD you will know what I am talking about.
Howard said, "you need to decided whether you are going to hunt or shoot targets, because the two do not go together". Targets are usually shot with deliberation, hunting is more fluid, tempo and timing is different. Both forms are different in drawing, aiming and releasing. Practice is different.
Fred Bear said, "he dealt with the business of target panic". He did so, by developing a practice and method of shooting instinctively, visualizing the flight of his arrow, coming to full anchor and releasing when he was at full draw without hesitation. He said, there are two kinds of instinctive shooters those that come to full draw and those that don't. He would come to full draw before releasing, always.
I like to hunt and gave up target shooting except for shooting 3-D which I shoot the same way. I like to shoot moving targets (game or birds) and wouldn't want to be bothered by a clicker. Going back and forth would drive me crazy.