1911 safety question

[Skinny Shooter]

Galco makes the Fletch holster which has a retaining strap that goes over the rear of the slide on a cocked 1911 which is in effect a hammer stall.
I carry Condition 1 which is cocked and locked the way the gun was designed.

Buckhunter, how do you lower the hammer to half cock?
I have large hands but it is more ergonomical to easily sweep the safety off with my thumb than to shift my grip to thumb back a hammer.
Under stress and/or in a close grappling situation, I can get that safety off much easier.

I'd never want to "go off half-cocked"