I went to the running store today to get me a pair of Vibram fivefinger Bikila's but they were sold out. I was able to try the KSO model. After I put them on, I felt like I was in my bare feet but with more traction. It was a really cool sensation. But with the lack of padding, I realized that I couldn't jump straight to running my usual distance in Vibrams without first conditioning my legs and feet. Plus, I definitely don't weigh a buck twenty like the Tarahumara. The couple of days I have run barefoot was at the rubberized track and my feet and lower legs got tired after about a mile without the support I'm used to. Plus, every once in a while I would heel strike if I wasn't purposely thinking about landing on the midfoot to forefoot. The running form that is needed for barefoot running is far from being ingrained into my muscle memory. So, I decided to buy a "minimalist" running shoe instead to help me transition. I got a pair of Sacouny ProGrid Kinvara's. The Kinvara has a much thinner and lighter sole and almost no structure when compared to a traditional running shoe. Yet, it does provide a little padding in case I step wrong or my form begins to suffer due to fatigue from lack of conditioning. I'll gradually try to work my way to 100% no-padding.
Also, while I was there I heard a rumor that Christopher McDougall, the author of "Born To Run," had suffered a stress fracture in his foot from barefoot running but I can't find any official news confirming it. I will definitely be buying myself a pair of Vibrams, maybe not just for running but for other activities like yoga, walking, water sports, or just hanging out.