Finally got a vim -> REPL via screen environment up and running.
This allows me to type commands in vim and send them to another screen process running a Common Lisp REPL.
Now I can save the contents of a vim buffer to a file while still retaining full interactivity with the REPL.
I'm working through the sample code in "Practical Common Lisp" by Peter Seibel.
It's going good so far.
Wish me luck!
Linux geeks doing what Linux geeks do...