Yes
Manedwolf, I have a Sig (sort of). My Sig is a Browing BDA .45 (Sig p220 European) that I bought new in 1980 ($369), and it has been a favorite of mine for many years. It did function flawlessly right out of the box with Frederal 185gr JHP ammo, and the sights were dead on for that load as well. Over the years I have had a few malfunctions with the gun, everyone of them directly attributed to crappy ammo.
While I did have good luck with my Sig from the start, there is always the possibility that not every gun out there is as good as mine. Blind faith is fine when your life is not on the line, but if it could be, it only makes sense to test before trust.
I was, and still am a 1911 man, and I have complete faith in my old Colt, we have been through a lot together. I also have faith in my BDA, as we have also been through a lot together. Tested, proven, dependable. If I were to go out and buy an new .45 auto today (either Colt, Sig, or any other brand), I would expect good performance, but I would not count on it until I had proven it. Murphy is alive and well, and his little gremlins sometimes get into even the best made brands. So, trust, but verify!