The S&W 39 was considered a flat and easy to carry Semi auto pistol. But the early 1980’s were a time when you either had a magnum revolver (the cool thing was a 6” 357) or a 1911 in 45acp. The L-Frame S&W 586/686’s were the new hotness.
The prevailing thought was that a 9mm would get you killed on the streets. Although older dudes carrying a well worn Hi Power were usually left alone.
Progressive thinking shooters looked at the new Beretta 92fs or the Sig 226’s.