Archiver, I can only agree with Yokosuka Mike. I have not found any issues of slow focus, but his opinion is worth more, because he is photographing faster moving subjects than me.
Not your question, but for me coming from Olympus OM (film camera) lenses and then M-mount and LTM lenses on the Epson and then the M9, I do find it to be a comparatively large and heavy lens, But the lens quality seems to me to be at least as good as the Planar 50mm. The size is a factor for me because I shoot a lot in bars with two bodies with lenses in the Hadley Pro small bag, because it is easier to switch cameras rather than change lenses in a crowd. However, in situations where I know I’m going to be close to the stage, the 65mm is more useful than my favourite Sigma, the 90mm, and, in those situations, I am tempted to go with one body with the 65mm and occasionally change to the Sigma 24mm F3.5 (just to contradict myself🙂 ) which I recently bought and like quite a bit.