Just got G-Voice and at this point, all I want to do is use it for visual voicemail. During setup, it asked me if I wanted to use my carrier's service or Google's service. I chose Google at which point I had to call a provided number that seems to initiate forwarding? Anyway, just wondering what would happen if I choose Verizon's service instead of Google? Do you still get visual voicemail? Are there any advantages/disadvantages of one vs. the other for the sole purpose of visual voicmail?