I hunt barefoot. Also, I've been running barefoot for years, its very feasible. And its not painful, once you let your body do its job. Actually, there are less injuries, once you learn to walk and run correctly. Your leg and butt muscles are meant to absorb shock, not your shin, knee and hip bones. And your feet can and are far more durable then you give them credit for.
I also own several version of the Vibram five fingers, I recommend all of them. The KSO trek are awesome for hunting, but I've worn the classics too. Bill, the treks get ready of all those slipperiness issues. In fact, I'd say they have better traction then ANY of my danner's or lowas in any situation.