Its not so much about others as I don't want to spend 3 hours setting up e very machine I touch, ie servers, borrowed machine etc.... I'm just as productive now (after a month of adjustment) but without the setup time.
Servers are a different story, but the ones I work with are all running Linux and have vi, which will do.
Most of the configurations just need to be copied. Just copy your .vim folder and you are setup with everything. Copy your .screenrc and that's that. I sync my dotfiles and then run a small script to set symlinks. That hardly takes 2 minutes.