Continuous AF on X-E1: A "no-go"?

I hear bad stories about the X-E1's continuous AF performance. Is it a complete no-go or does it work to a certain extent?

I guess continuous AF is difficult with contrast detection AF. So would introducing phase detection (like in te X100s) change the story then?

Last question: Is continuous AF possible with a selected AF point or does it only focus on the center point?

Thanks!