Pretty much my take as well. I imagine spending a few hours a month customizing your shell and text editor (hello vim/Emacs folks) to be more efficient and powerful is _great_ for developers who rarely leave their own workstation. But I spend much of my day logging into random hosts that don't have my custom shell scripts and aliases, so I'm actively careful not to fill my muscle memory with custom shortcuts and the like.

Of course, I _do_ have some custom shell scripts and aliases, but these are only for things I will ever do locally.