Funny you should ask, because my EDC is a .45acp.
First thing I ALWAYS do upon settling into my shooting stall at the range, is to practice drawing from my holster and firing with my carry gun. Usually I'll fire two shots and re-holster, draw, fire two more shots, and repeat until empty. This is more often than not at an indoor range and helps me evaluate myself, especially if it's been a week or two since my last shooting experience. I can't always afford to do it with the ammo I actually carry, but either way, FMJ or JHP, I like to see how accurate I can shoot before I'm adjusted to the indoor gunshots. Most folks I bring to the range aren't nearly as experienced or regularly practiced as I am, so I always start them off with .22s and work them up from weakest to heaviest caliber, to ease them into dealing with the noise and recoil without 'traumatizing' them with heavier calibers. I feel that this practice has been nothing but beneficial to me, might not work for everyone, but it has certainly helped me in the long run.
The way I figure it is if I ever need to use my carry gun for defense, I very likely won't be 'ready', so why would I want to give myself that privilege when first beginning practice. Those first 9 shots usually give me the best indication of what I need to focus on improving with my shooting for the rest of the range session.