“memorizing obtuse key commands which you never use on a regular basis” is exactly why I prefer Emacs over vi(m). The default configuration on Emacs works like most other contexts—I can just use the arrow keys to position a cursor and type.

And then, at least on the Mac, some of the basic commands in Emacs carry over not just to the terminal, but to things like text input windows in Safari and other Mac-assed apps so I can almost always use ctrl-a to go the beginning of a line, ctrl-e to go to the end, ctrl-k to delete to the end of the line and sometimes also I get esc-del to delete the previous line although that works in terminal, but not a Safari input window (and escape gets captured in IntelliJ’s terminal which kind of stinks).

I do feel that common config across a team is always a good thing. I’ve been the only IntelliJ guy on an Eclipse team and the only Eclipse guy on an IntelliJ team and both cases were worse than conforming to the convention.