>Only if you want to teach people to hate s-expressions

This must be stressed. It is very important to use a lisp-aware editor. It doesn't have sense to do stuff that a lisp-editor can do automatically, such as auto-indent, and keeping parens balanced all the time.

Also, a good IDE (such as Portacle) gives very good on-the-fly documentation of function parameters/etc, which makes learning CL much faster.