Interesting arguments. The only problem I have with the "scientists, doctors, podiatrist etc" who have joined the bf/minimalist debate and write these papers is that they don’t actually try it themselves. They base most of their arguments using data from scientific tests and current “understanding” of human biomechanics/biology etc. But history proves that scientific views change and that science isn’t always correct. Science cannot always prove everything. And why do we need “evidence” to say that bf/minimalist running is better or worse than shod running? There’s no real evidence to prove that running in shods prevents injury but they still sell in the millions.
So, everyone stop worrying about all this crap and go out and try it. Make your own decision. Wear shods, go barefoot, whatever! How cares. Just run happy and run free