I have a nose button on both of my bows and love them, although the bowmars certainly aren't my favorite and they keep getting in more trouble including a recent Iowa citation. The point of the device is that it is made with 360 degree projections which your nose feels only the very point of, not the whole device, giving you much more sensitivity and repeatability than a kisser, brass knock, piece of rubber, whatever. The key is in the points that stick out equally at all angles ensure that you get the same micro touch on the VERY sensitive point of your nose regardless of string rotation. It is so much more specific that a kisser and would be hard to replicate when they are so readily available