Yes, a couple do. Has been discussed.

I have two numbers --- one for personal and one for work-related calls. It was too difficult to use just one. I could not get the combination of rules that I wanted -- my set of rules were too complicated .

It's pretty cool for personal calls. Some numbers ring my home phone and my cell phone at the same; some numbers just ring the home phone. The voice-mail transcript that you get on email is really useful too.