What extra inertia? From slide lock to the slide fully to the rear is what....1/8" of an inch? Compressing that spring 1/8" of an inch is what makes the difference? Give me a break.
How to release a slide is by far the best litmus test to separate actual shooters from the rest of the pack.
If I remember correctly that extra 1/8 inch also helps if you get a maximum length cartridge.
You don't have to do it.
Dink
