I wear these mainly for crossfit activities, and they're great.  The 4mm drop from heel to toe really helps with the barefoot feel while still protecting feet from terrain.  The grip on the shoes has been superb as well as the stability.  My only complain thus far is when I bend my toes all the way, the shoe fabric pinches/rubs a bit.  It's not painful, just annoying.  However, my toes are rarely bent all the way during activity.  For normal running, jumping, and turning, these shoes are great.