I am the reverse. I am proficient at both, but I find FCP just can’t keep up with me. Trimming, adjusting, scrolling, JKL’ing. Either platform, a messy projct is a mesy project. Pain in the arse. However, I do find Avid’s media management much more useable.
What I like about FCP is that everyone pretty much uses the same keyboard shortcuts. I have my own, but no big deal if I have to use the default.