I have been back and forth over this line several times in the last 50 years: cheap RF>Nikon>Leica>Olympus>Leica>NikonDSLR>Nikon film. Along the way I have always kept at least one Leica, just in case. I used to believe that one "saw" differently with different cameras, but now I'm trending towards thinking habit is a greater force. In all of those years, the only line I couldn't easily jump was BW/Color. How I see there depends on what film is in the camera, no way around that (for me).
In the last round I considered buying another Leica, and took a look at prices. As someone mentioned, something has happened, and I can't justify it, so I'm satisfying that urge with cheap Nikons. Just bought a N90 on Ebay for $20. :-) It's first auto-focus film fun camera (the DSLR is for business) , and I think I'm in love with auto-focus! Since I have a full Nikon digital kit based mostly on AF-D primes, it was an easy jump.
For you, I'd say the best advice in previous posts is to get a cheap RF camera and try it for a while. I still carry an Olympus XA when going light.