I doubt many Lispers were because we already have emacs and SLIME. One of the most fun things I did was running a window manager called stumpwm and running swan

I doubt many Lispers were because we already have emacs and SLIME. One of the most fun things I did was running a window manager called stumpwm and running swank in that image so it could be modified on the fly with emacs. That's also how you modify emacs itself. It's just so cool to use a tool to modify itself while it's running...