Use $view argument in hook_views_query_substitutions

Hi,

I am wondering why it is that module does not make use of the argument that (a view object) that gets passed to functions implementing hook_views_query_substitutions()?

right now it looks like this:

/**
 * Implements hook_views_query_substitutions().
 */
function argfilters_views_query_substitutions() {
  // TODO: Chache this thing, so we don't have reload the view if it is already
  // loaded. Alternatively, make sure that Views does this alreday (which is
  // likely).
  $view = views_get_current_view();

  // Build the array of replacement patterns, but only if there is any arguments
  // set.
  $replacements = array();

when this will work as well:

/**
 * Implements hook_views_query_substitutions().
 */
function argfilters_views_query_substitutions($view) {
  // Build the array of replacement patterns, but only if there is any arguments
  // set.
  $replacements = array();

Is there anything that I am missing or is the reason for this related to caching?