GPP blog layout for CPT template hook shortcode

Hi David, is there a way to use blog (column) settings for CPT loop shortcode made by Your Github function (db_custom_loop_shortcode) ? Something like we can use for CPT archive page via filter:

add_filter( 'generate_blog_columns','tu_portfolio_columns' );
function tu_portfolio_columns( $columns ) {
    if ( is_post_type_archive( 'CPT_name' ) ) {
        return true;
    }

    return $columns;
}

Thanx a lot