I'm 0/4 on these gates so far. Not sure why this is, one agent said perhaps my data hadn't been uploaded by my carrier (AA) yet.

But even without the face matching working, they either look at ID or make you put the ID into a scanner and boom, you're on your way.

TSA has a list of where these gates are installed, it's a pretty decent rollout and includes terminals/carriers that never allowed Clear (AA at ORD for example).