I have both PPk/s and a PP and both are German made and I like both of them except they bite me. I worked at Shootes for a few years and we had one customer who was German and was Polizei. He saw me shooting my PP once and told me it took him a full magazine to shoot through a windshield.
And that is especially interesting, because in one book, Bond shot through the windshield of a train with the .25!

I regarded that as being "literary license".
I did read the link above, and it has some interesting stuff. But I think his bilbio. link to the, "Sports Ill." article, "The Guns of James Bond" was not written by Fleming, but by Boothroyd. However, it has been decades since I read it, and I could easily be wrong. I think this may be the article where it was revealed that Fleming had read an, "American Rifleman" story evaluating various enemy pistols of WW II against our .45 auto. It was an unfair comparison in some regards, matching apples to oranges. It is one thing to compare a Tokarev or P-38 to a .45, another to compare a Sauer M-38H or PPK to the .45. If you can locate that article in the Mar. 10, 1962 issue of Sports Ill.", it is well worth reading. I did read the same "AR" article that Boothroyd gave Fleming, and it would not have led me to select the PPK. I'm quite sure that Fleming was focused on a very concealable gun.
He got confused when Boothroyd suggested the Centennial .38 for the carry gun and an M-27 in .357 for the car gun. B. told me that he in part had ammo interchangbility in mind with that combo. But F. got the .38 confused with the much larger and heavier .357 and Bond took the Centennial to Crab Key. F. said that there were various barrel lengths, 3.5 inches, five inches, etc. That made it obvious that he was thinking of the .357, not the Centennial. I think B. cringed in horror when F. had the Maj. Boothroyd character speak those words!
I don't think that B. ever suggested a PPK. That was F.'s idea. When the M-60 .38 appeared in 1965, B. was quick to acknowledge it as the best Bond gun, for the stainless construction as well as the general advantages of small .38's. But F. had died by then, so nothing came of it.
B. def. wrote an article in, "Guns" about the 007 weapons. Alas, I don't recall the date. He had an enormous knowledge of fireams, both antique and modern. As for silencers, he thought that most people in Europe, at least, wouldn't identify a gunshot as such. They'd think it was a car backfiring or something else. To test that theory, he once shot out some candles with blank .450 ammo in a Colt SAA .45. No one called the cops, although neighbors must have heard the shots.
However, I suspect that if the shots had been fired in an adjacent hotel room, the results might have been different. I'm pretty sure that modern residents in Los Angeles might suspect gunfire!