I read P. Stewart's Review on these shoes and was sold.  I then went to the local sporting goods joint and tried them on, felt a little heavier than my Vibram 5 toes i have been running in for the last 4 years, but that is to be expected.  I had to upgrade to a full shoe because the Vibram Mesh was ripping between my toes too often, causing me to replace my shoe, or run with my toes poking out accompanied by sand and pebbles entering into the shoe bottom.  I have been a dedicated minimalist runner for almost 5 years, but one day I ran a race with my Vibram 5 toes rotated 90 degrees of my foot, i was basically out of the toes running on the side of the shoe, for 5 plus miles?  I should have taken them off but the terrain was mighty turbulent, one of those obstacle course races.  I am super excited Vibram has teamed up with New Balance and created a full bottom minimalist Shoe!
Keep your stride Manageable and your knees up!