I was using xmpp under asterisk before Jul 2014. Then switched to pygooglevoice after July 2014.
Early this year, I switched from pygooglevoice to and set up the GV inside the OBI 110.
Just about a month ago, I setup the xmpp under the asterisk again (fresh install) when I saw this article http://www.mikeslab.net/?p=330。 And it's working with no problem.