After about 17,458 flipping up and down on my PPK/S, and their recall, in which I included a note regarding the "stiffness" of the flipping up to fire, I got it back, and it REALLY HAS LOOSENED UP.

Now in a Don Hume IWB, it rides from time to time with one in the chamber, and flips up without issue. Yes the trigger pull is long, but not as long as my Kel-Tec trigger, plus the SA makes it much better on follow ups shots.
In range practice from holster, as a lefty to boot, my left (strong hand) thumb can flip up the safety, and transition to a shooting stance very quickly. If your a right hander, it should be even easier.
They are built very tight, and even after hundreds of rounds, it still feels tight, but the action itself has become smoother. Especially the formerly bone on bone safety.
It's a good pistol, with a worthy distinction of enough steel to beat the BG with. Unlike a P3AT, or LCP, a Walther can still pistol whip "em"...

Just my two cents. I do enjoy and trust my PPK/S, as with all smaller framed and sized handguns, they require a slight bit of adjustment to a mid or full size model, and as always, practice helps immensely.