In my case, I piss off zealots of all stripes by using both vi and emacs: vi when I just need to do a quick edit, and emacs when I need to get real hacking done

In my case, I piss off zealots of all stripes by using both vi and emacs: vi when I just need to do a quick edit, and emacs when I need to get real hacking done. On rare occasions, namely when I'm logged in to another system where I don't have my (voluminous) emacs customizations and vi isn't vim, I'll use ed.