I just caught up with this email, and it looks to me as if this will cause the inspector to fail for any lisp other than mcl and sbcl (and possibly cmucl). Shouldn't you be calling functions in the CLIM-MOP package? I just submitted a patch to Lisp-Dep/fix-acl.lisp to (I hope) make the CLIM-MOP package work for my beloved Allegro CL.
Best, R