"From a minimalist standpoint, the design is solid. The soles are a little thicker and stiffer than some other minimalist shoes on the market (from insole-to-outsole mine measured 10mm), so if you are looking to feel every pebble, then these shoes probably aren't for you. Despite the thicker sole the flexibility of the shoe is excellent, and in my opinion, allows the foot to function naturally as designed."
When I started looking for minimalist shoe options, Damien's site had the best list of options. It was a big help to me, so spend some time there. He's got a lot of great info.
My review of the prototype of these shoes, Russell's minimalist line.