Dude, seriously. Works great now. I'm such a newb (I swear it didn't work before).
This service is f'ing awesome. I was using teltub's gHome to interface with Google Voice, and the voice delay was unbearable. I was told to use teltub's tHome (basically thier home-grown SIP service) because it would be faster, but I was still having over a second of voice delay, and they couldn't get their act together on providing e911. On a whim, I decided to pick up an obi100. It's ridiculously great. The voice delay is minimal (no worse than my cell), and I setup sp2 for e911 through call-centric. Done and done. WAY BETTER than teltub's service.
Thanks, guys.