About 25 years ago I had two M5's (and a 7 elements Summicron), these are the best camera's LEITZ ever made, better than the M4-2 and the M3 I had previously...
Perhaps some purists found it "ugly" and a "disrespect" for the Barnack legacy, which ofcourse is nonsense, it was a technical evolution adapted to the needs of the times...
I found the design very 'Bauhaus' styled.
The only negative side was that I had to let modify the bajonet mount of my Super-Angulon 21mm to prevent the metering arm from popping up as it might hit the back end of the lens.
But for the rest, just a superior camera (perhaps a little over-engineered)!