Using the slide release is no more of a "fine motor skill" than pressing the trigger, the magazine release or using the sights.




In order of speed-


1) Slide release with strong side thumb.

2) Slide release with weak thumb.

3) Racking the slide.




Using the slide release with the strong thumb is only marginally (.10- 15 second) faster than using the weak thumb, but is more prone to pre-release of the slide.



Using the slide release with the weak thumb is very fast, extremely consistent, and repeatable in daylight, at night, and under stress.