Additional layer of safety that doesn't slow down target acquisition even slightly (thumb releases safety while you're drawing from holster). Makes perfect sense to me...I was wondering why the thumb safety needs to be on to carry a 1911?.
There is a grip safety that will not allow the hammer to fall while in the holster. So why carry it with the thumb safety on?
Most firearms have nothing but a trigger safety now days, and with proper finger placement drawning the 1911 and firing it should be no different.
So why use the thumb safety at all?
Now remember I'm a 1911 noob so educate me.