I got tired of waiting for a Skype client from Skype (come on!) so I decided to give Fring a try.  I'm quite pleased with Fring as it allows me to have almost instantaneous Skype conversations via Wi-Fi.  Also interesting is that I have an unlimited call plan with Skype within North America so I'll be using that as my primary phone when I'm at work or home.  More details as I use the service.