1911s are just fine to carry; the gun you see as my avatar is my main carry gun, and I have carried it since 1994 when I first bought it. The only times I haven't carried the gun has been to send it off to the gunsmith for another modification or to send the gun off to get hard chromed when I finished it. Aside from that, it is my constant companion, and I would bet my life on it. It has cycled thousands and thousands of rounds with no problems.
Just understand, though that the guy who built up the gun knew EXACTLY what he was doing. So many people take their 1911s to gunsmiths who claim to know what they are doing, then end up with a gun that won't run, and that in turn ends up giving 1911s a bad rap....
I say if you want to carry one, carry it. If you want to test it, a thousand rounds of trouble-free operation is OK, but I would rather test the gun in a match setting like an IDPA or IPSC match; there you will run the gun hard, and you will find out if something is going to fail pretty quickly. If you can shoot the gun in a couple of matches, and have no problems then I would say it is ready to carry into battle.....