They used to have this thing called "PPC". The original intent died as soon as at became worth winning.
At least they had cooler guns.
Okay, I'm calling malarkey on that.
Nobody wears photographer's vests. It wouldn't even count as concealment in a pretty good chunk of the country.
Ditto for the holsters and the mag carriers. The guns don't get realistic for most folks until you get down to the BUG classes. My G34 MOS would be legal for "Carry" Optics. Dude, if I'm actually toting my G34, it's because I just capped Cletus, the cops took my 26, and I'm worried about retaliation from his 17+1 cousins.
Oh wait, I'm in New York, where Cletus only has 10+1 cousins.
Gun Game 1 is no more "realistic" than Gun Game 2. It's just flavor, what's available in your area, whether the participants in one are jerks in your neighborhood, and what kind of gear you want to buy.
But that's fine, because if you made people compete with
real carry guns in
real concealment holsters, it would be like watching
Keystone Kops, except with guns, and a surprise castration at the end.