I own two Kammocks now and love them despite the carabiner issue I posted.
Used them in a great hang at the tip of the Keweenaw Peninsula in Lake Superior this weekend. Right along-side my wifes HH and my WBBB.
The hammocks are large, comfortable, and dead simple to use for my 7 and 9 year old girls. They python straps are the easiest and safest method I have found yet.
That said, they are expensive for what you get and not at all ideal for backpacking. My daughters will outgrow these and use better systems when they get older. These will then retire as comfortable fixtures at home.