It mostly works, most of the time. It still doesn't do stuff I really want (SIP client on the phone), does stuff I hate (stupid integration with gmail), and for weeks at a time, loses some calls, is late with SMS, has horrible audio quality, etc.

Less reliable than gmail, which is already below the reliability I want for a major communications channel.

I still use google voice for a personal number that I mainly give to spammers, but I'd never use it for business, and I've been finding myself just giving my cellphone (or work SIP number) to people.

I'm also concerned google will kill the product, but as long as I can port, that's a lesser issue. (If I can't port, I'd be incensed, though)

The voicemail transcription (works, for US english accentless people) and SMS forwarding (which doesn't work) are the things which keep me on google voice, vs. just running my own SIP. I'll look at Sendhub, either directly or as a voicemail forwarding number.

What I really want is a SIP url I can point calls to and get voicemail transcriptions back as email or something. I'd probably pay $10-20/mo for that for <50 calls.