A Hint of Things to Come for Google Voice VoIP?

There is an interesting article over at the Disruptive Telephony site, talking about how the author has gotten his Google Voice number to work absolutely over IP, using something called a "SIP" address to initiate the voice session.  In an unofficial way, the author of the article is saying that VoIP (Voice over Internet Protocol) calling is already possible with Google Voice.    Here is a quote from the article:

The author is knowledgeable about IP communications

It seems the author is knowledgeable about IP communications, and has used a client called Yate to use the Google Voice service in an IP state.  Make sure to read the article through a couple of times to understand the route the author is taking, and as well please note that some people have had trouble with it.  Either way, it is a good sign that VoIP calling could be in our future with Google Voice, something that we have been hoping for, especially on our Android handsets.  I can picture the cow the carriers would have if it comes to fruition!