Roll20 can integrate with Google+ Hangouts. That is how I run my Roll20 game, with the G+ integration. Works fairly well, though we seem to constantly hit a slow dice rolling bug.
Sorry for the late reply, IronWolf. I was in the Galapagos without internet access for about 11 days
. Yeah, my group has used G+ integration as well, and have hit the problem you cite (Roll20 forums seem to indicate a memory problem with G+). We prefer using the client itself because there is a bit more screen real estate. Thanks for the tip, nonetheless!