Rating: 5 / 5
Great boot! Half the weight (9oz per boot in a size 10.5) of my old boots (Montrail Namche... themselves quite light for boots). Excellent grip, no episodes of turned ankles, breath and dry well.
The sole is more flexible than the usual boot (to prevent ankle rolling) allowing greater feel of the ground underneath but I had no discomfort from pointed rocks etc.
Great performance on a recent 3 day trip in the Smokies foothills (pack weight ~12 lbs).
Only two caveats... they seemed to run about 1/2 size too big for me, and naturally these will likely to be less durable than heavier boots, a trade off that is quite worth it IMO.