How would they do anything with this on the android? Since Google Voice is pretty much automatically used on the phone anyhow (after setting up the app) I can't really imagine any uses for an android phone... Nice option while working from your PC though... If ya do alot of PC phone calls that is...
Google Voice on android currently is not VOIP.
GMail voice chat on the desktop is VOIP.
While there are work arounds that allow one to use Google Voice for free outgoing calling if you have a Friends & Family type plan currently making a google voice call from android uses minutes.
It would be nice to be able to VOIP from the phone like you now can from Gmail.
I could see ditching my land line (which is really a VOIP line via my cable/ISP) and replacing it with a Wi-Fi enable droid that makes VOIP calls for free in the US.
Likewise it would be cool if I were outside the country or outside service area to be able to make a call from my handset over Wi-Fi.