Thats okay. Some people are actually skilled enough to shoot any handgun even under stress. If I had more money, Id be rotating between a Glock 47, Glock 19, and a 2011!Only hits count, and you can't miss fast enough to be effective/score well.
Carry the one you shoot better. If you shoot both equally well, carry the one you like better. Bonus points if you think it's pretty.
Or you could be like me, do it "wrong" and switch carry guns on the reg. I'm the guy who carries a striker fired one day and a single action only with thumb safety the next. And I'm not morally opposed to carrying a DA/SA hammer gun either. Depends on the situation/how important (or not) absolute concealment is/what I feel like that day.
Just make sure you're carrying something, and you'll be fine.