This is going to get so Florida, so I'm sorry. Most of the people I know who carry daily carry guns without safeties, so that just wouldn't work. Also, it's literally a mark of distinction between "responsible gun owners" and irresponsible ones that before the alcohol comes out all the guns are made conspicuously safe, unless the person is a designated non drinker. They would take on the unspoken responsibility of being armed and vigilant for the rest of the group. This will happen discreetly in mixed company, but likely conspicuously if everyone present carries a gun.

And anyone committing the faux pas of calling a magazine a clip would get a polite correction, and if repeated they wouldn't be invited next time.