I have been using a wrist release from day 1 (2012) every draw from either of my bows has been with my Scott Caliper Wrist release. I purchase a Scott Exxus 3 finger thumb release on Ebay should arrive tomorrow. I chose Scott because of the warranty factor. As I stated before I have never used a thumb release but have seen them used at my range and You Tube. Is the transition very tough?