Hi Jason,

Thanks for your reply, I ended up using the following to restrict loading to the post type:

global $pagenow;

if ( 'post.php' === $pagenow && isset($_GET['post']) && 'your_post_type' === get_post_type( $_GET['post'] ) ){

add_filter('piklist_assets', 'plugin_assets');
function plugin_assets($assets)
{
    array_push($assets['scripts'], array(
        'handle'    => 'plugin-scripts',
        'src'       => plugins_url('/your_plugin_name/parts/js/scripts.js'),
        'ver'       => '1.0',
        'deps'      => 'jquery',
        'enqueue'   => true,
        'in_footer' => true,
        'admin'     => true,
        'front'     => false
    ));

    return $assets;
}
}

This ensures assets are loaded only where required and not globally.