I honestly don't remember as it was +/-6 years ago. I had started learning Haskell and got to that conclusion. Maybe that I am now more versed in FP I would arrive at another conclusion? I don't know.

Another thing that was hard to grasp for me were the special operators like =<<, ., $, etc. I was using Xmonad, but those operators create a barrier to understanding exactly what happened in the file.

In the end, F# was in my (personal) experience much more approachable, and it let me learn the functional concepts along the way.