I shot about 200 pictures with the 60/2.4 yesterday. None of them were anything special, just testing the lens and getting used to the camera.
Besides the slow focus in low light, the other thing I noticed is that the viewfinder framelines for the 60mm lens are far from accurate. They provide, at best, a general approximation of what will be captured in the image. I found myself having to correct for it especially when shooting in the portrait orientation, where the shift and excess image capture is more obvious. The sensor captures quite a bit of image above and below (or at the sides, if shooting in normal landscape mode) the frame lines.
Even worse, an object that is centered between the framelines will be shifted to the left when the image is captured. Again, it is more obvious in portrait mode (right hand at top).
Are there settings I can change that will improve this? I have image size set at L 3:2.