Neither ends in a working development environment or even text editor.
Compare this to learning Python or Javascript or the C family. VSCode or even just your standard OS text editor is all you need. You can decide to start learning, find a tutorial on Youtube, and execute your hello world in 60-120 seconds.
> At one point many years ago, I wanted to check out this new Python thing. It was so easy, I've been hooked ever since.
IDLE is a underrated feature of Python. The default install includes a barebones IDE together with the REPL, making setup for beginners nearly zero effort. On the other hand, in lisp land, step 0 to learn most lisps is to learn emacs beforehand.
I use slimv with vim, but basic Emacs is not difficult: Ctrl-x b to swich betwen buffers, Ctrl-x s to save, Ctrl-x c to exit, Ctrl-c Ctrl-c to evaluate the CL buffer under Slime, Ctrl-x e to eval most Elisp and CL code functions.
Also, knowning CL makes learning Elisp a breeze, so you can customize your editor like nothing else.
https://lem-project.github.io/