Bindings from lisp-mode-map clobbering slime-edit-mode bindings.

Hi all, The issue I'm having is that, in the SLIME REPL, useful key bindings like the C-c C-v prefix for presentation commands and C-c C-d for doc lookup is being shadowed by key bindings for not very useful lisp-mode commands. I think this is because slime-repl-mode-map inherits from lisp-mode-map. I fix this locally with (set-keymap-parent slime-repl-mode-map nil) and am wondering if this should be the default or if there is some reason why slime-repl-mode-map inherits from lisp-mode-map? Respectfuly, Avram