Glock 36 in IDPA
If that is what you carry, by all means shoot it. Then, no matter where you place, you WIN because you are a better shooter with your carry piece. It seems that IDPA guys have a certain "respect" for folks that shoot what they really carry. A guy that shows up and shoots his carry gun will likely get the compliment "yeah, he don't game it."
Sometimes...days are just something you get through.