In the old days back in the 70 and early 80s, I carried a set of matching satin nickel Colt Combat Commanders. One in a shoulder holster, and one in a pancake hip holster. No one ever asked why I wore a windbreaker year round. I also carried two spare magazines on the belt, a boot knife, and there were magazine pouches screwed into the driver's side inside door panel above the arm rest. They held 6 45 mags, and four M-16 mags. I was the only one in my county assigned to narcotics. I took the dope dealers seriously, and they took me seriously. When I carried a revolver, I carried a Colt detective special as a belly gun. Still carry a belly gun.
Today I no longer hunt bad guys, so I carry a Benchmade 710 lock blade, and Model 60 Smith in 357 mag, or a Model 686 2 1/2 in 357 mag. Most people don't take an old man seriously, but the folks that know me still do, and not everyone that knows me, likes me.
If your turned to carry a second gun, then by all means do. I highly recommend it.