Shoot effectively. What does that even mean ? They were never designed or intended to be range toys for the weekend blast boys, or engage mythical enemies in 15 shot shoot outs at 25 yards. Or be the subject of Youtube wonder freak baitclick video comparisons. They were designed to be easy and unobtrusive to carry. To be safe to carry, and to go bang when the trigger was pulled. (EDIT: they were not really made to be "effective" in some aspects of shooting.) I know how one would feel in direct hands on comparison to a Glock, SIg or a HK. Junk, OK. Ask Trevon Martin. Anyways they are gone. The Ruger is the same GD weapon.
My personal problem with CCW is me. I have never been comfortable with shit in my pockets or belted or strapped on to me. A weapon is useless if its left at home. I can't see carrying a 24oz (loaded) metal pistol Just no way. Subject for another thread I guess. The lightweight version of the Ruger LCP is not available in CA, only the 18oz one. My Bersa weighs that.
I won't carry a gun until it's had at least 200 flawless rounds through it. Every Kel Tec I've owned and interacted with either needed a full "fluff & buff" as people call it AKA a full teardown and polishing just to clean up the shit manufacturing, or excessive break-in time and to actually run smoothly after many malfunctions. And then the rest of those rounds are flat out unpleasant.
Then there's the whole, you know, actual defensive shooting part. Which requires more [unpleasant] rounds through the gun and repeated cycles to even begin to get proficient with it. And still, getting a shooter with a sub-sub-compact pistol to that point rarely works out well. Follow up shots are slower with the increased muzzle flip.
There's the physics of Browning style action that still requires either slide mass or spring tension to function... Less slide mass requires more recoil spring to offset the recoil of a caliber that actually does something. And drawing/presenting a tiny gun is awkward, more so in pocket carry.
One little mistake to foul your grip and draw, and you've limp-wristed the first shot even with the best Ayoob Crush Grip.
Pocket carry sucks. If you need a gun, carry a gun that actually does the job. I don't want a gun to disappear... I want to know it's there.
Long story short, very few shooters will ever be able to get to the point where they can effectively carry a tiny .380 or 9mm, draw from concealment, and consistently put 3 or 4 rounds into a torso at 7yd, in enough time to actually stop a threat. The rate of success increases dramatically by stepping up to something slightly larger with a little more mass.