To clear jams or be ready to use a BUG(back up gun) is smart.
Years ago(late 1990s), I had a new in box model Beretta 96D(treated with Robar NP3) that had a minor problem. On a gun range, a tiny bit of brass got caught in the pistol's extractor.
I took the 96D apart & fixed it but the event showed me that even a custom grade, high quality model like a 96D could have a problem.
PS: FWIW, I never carry any sidearm(pistol) that I can't field strip without tools.