Rather lovely 5 min video profile of Ruby. Lots of trail running - in Vibrams. And, damn, she is fast downhill!
Clearly, the Force is strong with this one. The shoe leaps into her hand at T=14s.That putting on the shoes bit definitely looks like it was filmed taking the shoes off and then reversed.
Those trails in the video look perfect for barefooting! Grass, dirt, mud, streams. I didn't see any sharp pointy rocks, or really any need for VFFs at all.
She said that she runs on technical trails. Did the video footage show any technical trails? (I'm asking because I'm not clear on the terminology.)