Agreed.
As for carrying a full-size 1911, keep in mind that most folks have no problem concealing the length of the slide; it's the length of the grip that protrudes and causes telltale "printing". If you are going to carry a heavier weapon, the key to your success is to view your holster and belt selection as an entire platform and not just individual pieces. Namely, select both as purpose-driven components of their ultimate combination.
A good holster paired with a sturdy purpose-built gunbelt will allow to carry almost anything without fatigue and with better chances for concealment. I use a Milt Sparks VM2 and a 1.5-inch double layer cow-hide belt from The Belt Man, and can carry my 5-inch 1911 all day under a loose t-shirt or polo-shirt without fatigue or "being made" by anyone.
Someone here already mentioned that they are using a Galco for this. I'm surprised they are having any success based on my previous experiences with Galco's mass-produced, flimsy, loose gun leather. Maybe they've improved their product since I last looked at any of it, though.
With holsters and belts, you really do get what you pay for and it's typically not cheap to get something really good. But then again, if you trade guns frequently, this may not be for you.