On Debian (and possibly Ubuntu) one can get the SBCL package from unstable (it doesn't depend on much) and go from there if installing from source is too much of a hassle.
Don't install any other Common Lisp stuff SBCL doesn't depend on from the Debian repository though, except maybe ASDF. Get everything else through Quicklisp.
Don't install any other Common Lisp stuff SBCL doesn't depend on from the Debian repository though, except maybe ASDF. Get everything else through Quicklisp.