Re: As a long-time Vim user (since 2005 or so)
"EVE ... was written in TPU and intended to be an extensible emulation of EDT although it never quite succeeded in getting the basic emulation right.
EVE's first stab at EDT emulation gave you the worst of both worlds (no command line mode for either editor IIRC), but it improved an awful lot after that.
Once EVE's EDT keypad matured I would use that most of the time, but drop into EDT where that was more suitable for the task at hand. Best of both worlds.
Vim's clear advantage over either is its ability to get stuff done when function keys or alternate keypad mode (or even cursor arrow keys) aren't available.