Over the years, I've used many pistol platforms in both pistol and multi gun matches. Running your carry piece is the way these sports started, and your question leads to a bigger question: Are you shooting to game, to train, or both? I mainly shoot to train, and because I enjoy it, but I say there's room for both. Many times, I would shoot a 5" version of my 4" carry piece, with a refined service trigger in both. When I got more into the gaming/competitive aspect, I was shooting a 2011 with a trigger that was too light for street use. So, my answer is "yes", I shoot my carry piece in matches, especially if it's a new piece. I'm gaining proficiency and confidence with the same tool lives could depend on, while testing reliability, in the elements. If your new piece has an issue, 5 or 6 matches will usually shake it out. What better reasons to burn some ammo?