WordPress override template hierarchy/suggestions

gistfile1.php

<?php 
/**
 * Template hierarchy overrides
 * Use taxonomy or archive templates for specific cat and search queries
*/
function duffy_override_category_template( $template ) {
	if ( is_category() && ( 'custom-tax' == get_query_var( 'taxonomy' ) ) ) {
		return get_stylesheet_directory() . '/taxonomy-custom-tax.php';
	}
	if ( is_search() && ( 'custom-type' == get_query_var( 'post_type' ) ) ) {
	    return get_stylesheet_directory() . '/archive.php';
	}
	return $template;
}
add_filter( 'template_include', 'duffy_override_category_template' );