At this moment, only the _s_posted_on() and _s_entry_footer() functions in template-tags.php and _s_setup() in functions.php are set up to allow for overloading by a potential child theme.

While _s is intended to be a base theme and not a parent theme, this does not negate the possibility that a derivative theme based on _s would become a parent-theme for other child-themes.

To that end, I'd like to suggest making all methods within _s overloadable by a child-theme, i.e. wrapping all functions within a if ( ! function_exists( 'function_name' ) ) {} wrapper.

Opinions ?