Can I use Google Voice voice mail with Voxalot?

[MountainX]

I like the voice mail features of Google Voice. In particular, I like:
* notifications (with emailed transcripts & audio)
* personalized greetings per caller or per group
* all voice mail messages in one place (including calls to mobile phone number)

I don't know of another voice mail service with these features. But I am not happy with the rest of Google Voice, particularly the call quality and connection reliability. So I'm switching to Voxalot.

Can I continue to use just GV's voice mail? If so, is there a forwarding cost (per minute) when incoming calls get transferred to voice mail? (My sip provider gives me free incoming minutes but I will get billed if the call is forwarded to a DID.)

Thanks for any ideas.