Among Leica, Bessa and Fed, first one is the winner to get attention and questions.
Leica was discreet camera only after it was the market at beginning, photogs purchased them to replace larger folders and TLRs.
The absolute leader for film discreet camera from what I have is XA.
Yet, I was not only noticed, but asked once with this little camera in use. One day in the past summer I was taking shadows pictures at the fence in the neighborhood. My toddler in the stroller beside me.
Female approached me and asked what and why I was taking. I pointed to the shadows. She walked into the house this fence is linked to.
Yesterday, while walking with family in the dark evening and passing by same house, my wife told me:
"Strange house, all windows are completely covered all the time".
😎