I read elsewhere that you're also a Racket user. I'm curious ... aside from CL legacy code requirements, do you view Racket (the language and/or ecosystem) as a smart long term choice going forward with lisp projects?
I would choose one or the other for most of your Lisp dev. I have been just an occasional user of Racket forever, but in the last few years I have really been enjoying the language and the minimal tools I use for Racket dev. I also feel happy using Common Lisp, so it is difficult for me to make a definitive statement on preference.
Racket and LispWorks Pro have portable UI libraries which is nice. I evaluated both Racket and LispWorks Pro for making standalone apps and they are both pretty good.