I've been running in Five Fingers for the past year and a half and was looking for a new pair of running shoes that  would give me the barefoot feeling. These are perfect! They are super light and I can wear them all day long. I wear them on a daily basis for work (on my feet a lot) and for running.
The longest run on them was a 13.1 miles. No blisters. I did order half size larger and it's perfect.