You're not missing anything, colo303.
Forwarded Local Service would be useful for those who want to keep a telephone number, yet not necessarily have a real telephone line attached to it. When used with Google Voice, it would be most useful if you have at least one other telephone line, such as a cell phone, work number, or whatever, where you can receive Google Voice phone calls. Put simply, it's sort of a make-shift way of "virtually" porting your number to Google Voice when Google won't allow it to be ported in.
(Technically, I understand that there are some ways of using Google Voice without another telephone line, but that's not the way the service is typically used.)
Bookmarks