I tried out FBT in Zenith and [spoiler]it's alright[/spoiler]
the rig is usually pretty accurate when it comes to the knees and feet but goes sour once you're above the hips. it's not that noticeable when you're hanging out with others unless you're laying down (you can see at the end of the webm where my right hand and head actually are)
overall I'd say it's a much needed addition despite the scuff, walking around and gesturing while you're hanging out in a group waiting for your health to come back or playing chess/connect 4 is nice