With Fuji X I disliked the zooms compared to the primes (big big image quality difference) so first thing I did was getting the 35(new) and 85(used) alongside the 20-60 (had to wait a while for my 70-300) and it was October or so, getting dark fast. But after getting the 24-105 and loving the 70-300, my love for the zoom is back. First I thought the 24-105 would be too big or heavy (I thought the same about the 70-300) but I adjusted fairly quick to the new sizes. After getting the 24-105 I did not use the 20-60 at all, and the primes (35/50) only indoors, and 85 not at all, had to force myself to use it.
That is why I choose to get rid of the 85 & 20-60 when a used reasonable priced pro 16-35/4 crossed my path, a much better combo with 24-105 . But the 20-60 and 85 were/are excellent lenses. And must admit, a 20-60 would have sufficed in 80% of the times I used either of the f4 zooms. For a lot less money. But I think these f4 lenses will serve me very well if I upgrade to a newer higher mp yet unknown body in the distant future. (no plans whatsoever), or when in time a 2nd hand S1r will be available for "peanuts".