How to show the "Latest visitors" block on the user's blog page?

How to show the "Latest visitors" block on the user's blog page rather than the profile page ?
Page specific visibility settings seem to have NO effect as this block always seem to be displayed on user/* pages.
Setting " show on only the listed pages:blog/* " actually makes the block disappear.
Can something be changed here:

      case 0:
        $block = array(
          'subject' => t('Latest visitors'),
          'content' => user_visits_display_block_1(NULL, $limit),
          );
        break;

?

Any workaround will be most welcome.