@DPI7800
Thanks for that overview of the techniques and reasons.
One question arises, largely due to your observation about how people perform the sling-shot action incorrectly.
I own a CZ which, by virtue of its in-the-frame rail system, has comparatively thin slide serrations. Being a predominantly, slide release user, I wonder if the "4-finger, thumb" technique you describe would still be effect on these, or would that smaller grip area on the slide require a different approach?
Either way, I think I have decided that I need to start changing my ways and going for the sling-shot approach instead, but it will be a hard habit to break.
I just now need to find the method that works best on my gun, so PsOV welcome!