There are GUIs for Sass now that require 0 knowledge of the command line. I think Prepros lets you drag and drop a folder and click a folder watcher button. `gem install sass` + a basic Gulpfile isn't that hard either.

https://github.com/joe-watkins/gulp-sass-starter/blob/master...

Although you're correct, I meant in a professional environment. Id be quite surprised if I caught one of my devs not using a preprocessor.