I had a G23C for a few years. I mostly shot it outdoors, so I seldom saw it spitting flame. I did have to clean off the front sight a time or two on longer range sessions, but no big deal.
To me it felt about like shooting a G22 without a compensator.
When I fired it indoors, I definitely noticed the flame, but it didn't interfere with my shooting. I wasn't shooting low-light/dark, though.
I'm pretty sure that shooting any gun without a suppressor in the dark is going to produce a very bright muzzle flash, so that wasn't a factor for me. I also figure that if it interferes with my vision, it also interferes with the burglar's/home invader's, and I know where all the furniture is.
Enjoy your new baby!
"An armed society is a polite society." Robert A. Heinlein
"After a shooting spree, they always want to take the guns away from the people who didn't do it. I sure as hell wouldn't want to live in a society where the only people allowed guns are the police and the military."
William S. Burroughs