GJM, that is indeed interesting. I've been in the habit of a dab of grease on that spot in Glocks, so I'll rethink things re: the Sigs.
Have to wonder; one of those levers is also the firing pin safety on the P320; wonder if they're concerned about that getting gunked up.
The P365, of course, has the Glock-like plunger in the slide.
Thnx,
Moon