I am using Skype with Fring. works ok but alot of latency. about 6 second lag.
Sipdroid using the Gizmo5/Google Voice solution seems to be working alot better and only about 2 seconds of lag. plus sipdroid has a dialer pad which is good for automated systems. Whereas Fring doesnt have a dialer. Still would love to see a true Skype branded VoIP app instead of the beta POS they have out. What Douche thought that was a good idea?