Actually direct chambering with a 1911 is usually considered to be taboo (due to possible extractor damage) and should be...sometimes.
Usually the extractor "as fit" and configured from the factory could possibly suffer some stress to the hook due to direct chambering.
Mostly due to the front surface of the extractor not being nicely curved/radiused and polished.
And...also due to the fact that the extractor hook is usually longer than it needs to be.
However...If you custom configure your extractor it will move over a cartridge case quite easily and there will be no damage at all to the extractor.
Also the new machined and properly "hardened and tempered" extreme duty "tool steel" extractors are so doggone tough these days that they just do not break that easily - and certainly not with that small degree of flex over a brass case.
Just my personal opinion that direct chambering of a cartridge in a 1911 format pistol does not need to be the problem that it once might have been.
You CAN configure and tune a highest quality 1911 extractor so that you can direct chamber cartridges without doing any damage at all to the extractor.