I've got something weird. I got the update on both my phone and my wife's. Installed the updates and got the blue screen to import GV functionality. My wife's phone also has my google account on it and so she was getting my messages in addition to her's. I tried to disable my hangouts on her phone, but couldn't find that option. Therefore, I just went into her hangouts, under my name, and disabled my GV functionality on her phone. Evidently that disables my GV functionality on ALL devices, so I had to go back in and re-enable the GV functionality.
Now, however, I seem to have lost the ability to send GV SMS to my wife. My only option is to send her an SMS via my Sprint number, or via the Hangouts IM.