Drupal 7: Bean view page override with bean type specific page view callback.

MODULE.module.php

<?php
/**
 * Implements hook_menu_alter().
 */
function MODULE_menu_alter(&$items) {
  if (isset($items['block/%bean_delta'])) {
    $items['block/%bean_delta']['page callback'] = 'MODULE_bean_view_page';
  }
}

/**
 * Bean view page.
 */
function MODULE_bean_view_page(Bean $bean) {
  $title = $bean->label() ? $bean->label() : $bean->adminTitle();
  drupal_set_title($title);

  if ($module = $bean->getInfo('module')) {
    $page_callback = $module . '_bean_' . $bean->type . '_view_page';
    if (function_exists($page_callback)) {
      return $page_callback($bean);
    }
  }
  return bean_view($bean);
}

The origin of this code is from the use case in which the selected view mode value is not actually set or used with a default bean view on the bean view page. Therefore, an example implementation of the hook_bean_BEAN_TYPE_view_page would be:

function MODULE_bean_BEAN_TYPE_view_page(Bean $bean) {
  return $bean->view($bean->view_mode, $GLOBALS['language_content']->language);
}