I'm not sure, but I guess altogether, I must have something around 40 cameras. Everything from a so far unusable 8x10, to a Minolta 16 I haven't used in probably 40 years. Most are in working condition, but some that are no longer have film easily available, such as 616 or 127 (I even have a 127 rf). Others, like my TLR's just aren't a type of camera I am particularly fond of. That still leaves a lot of cameras. Even some 35 mm fixed lens rf like you mention to start this thread.
But I do try to use as many as I can. They all need to be exercised once in a while. I do like to keep a small camera at hand all the time. That may be a small P&S digital, fixed lens rf, or a Fujica ST series.
I think you will find you will do the same. I love everything about my Super Press 23 except for one thing; size. When I just want to have a camera, but not that size, an Olympus SP or Canonet 17 are a good thing to have in your arsenal. Get the fixed lens rf you want. You will find you like it.