My most recent 1911 was pulled out of the box and taken to a 2-day, 1,000-round training course without any cleaning. I gave it a cleaning after the class, and it has fired a bit over a hundred rounds since then. This is a tightly-fitted custom that will shoot an inch at 25 yards and has a 3.5# trigger, so after the first case or so of ammo I decided to run it down to the guys who built it at Coal Creek Armory and let them inspect the guts.
Gunsmith Bob tore it down and we examined all the surfaces that you worry about in a hard-fit custom under a loupe and pronounced it good. No sign of battering on the barrel feet, no uneven wear on the rear of the barrel hood... Not that I expected any, but it was good to get the official clean bill of health. I'm happy. I'll bring it back for another check at the 5k mark or so.