I do not understand your need for a safety lever at all. You mention you want it for non carry reasons but why? If HK has the firing pin block and you keep your finger off the trigger... why do you also need a lever safety? Are the first two (FPB/Finger-brain) not worthy?
First, I never said I "need" for a manual safety for non-carry reasons.
As I said, belt-and-suspenders. I don't know of anyone who is perfect, or anyone for whom finger-brain control is infallible, including expert/master-level shooters (ask them if they've ever had an "oops" moment, and get back to me when you find someone who hasn't).
Do I expect to ever have a brain fart? No more than you do. In fact, I'm pretty
[email protected] fanatical about trigger finger discipline, 100% muzzle direction awareness, etc. But the fact of the matter is unexpected things happen. Ever trip or snag a foot on something you didn't see? Ever have something in your hand slip/fumble about with it before you regain control? Ever walk into the edge of a doorframe because your attention is elsewhere? Ever get startled by a loud sharp noise? Ever have someone else do/move in an unexpected (often unthoughtful) way? Stuff happens.
Having a manual trigger block safety *available* (note, I didn't say "needed") provides an additional redundant layer that I appreciate (I come from an engineering world that values redundant levels of safety to mitigate against the fact that humans, no matter how well-intentioned, make mistakes, so maybe I'm inherently more cautious than average).
BTW, a firing pin block safety doesn't do squat if something actuates the trigger during an unexpected "event" (e.g., snagging on a branch or the corner of a table that sneaks in behind the trigger guard, or the human tendency to clench/flinch during a sudden, surprise event). This isn't about dropping the gun -- I agree the FPBS effectively eliminates that concern completely.
If you are comfortable with your gun without a manual safety, fine -- no problem from my end. I also would like to believe you are not implying that those of us that like the *option* of applying a manual safety when desired are being stupid for wanting to keep the option.