I set it up on my blackberry and am getting mail but it's not syncing in the same way as my yahoo mail account is. Indeed the mail icon just has a globe, wherease the Yahoo one has a Y, making me think it's just treating it as standard POP3, and not recognizing the mail account as a google account.
I think the problem is actually not the recognition, but a problem with RIM and google. Gmail does not automatically sync read/unread messages like Yahoo mail does. You have to manually set up IMAP using these settings: BlackBerry - Help Center