I'll second hacktorious on the simplicity factor (and the weight savings!) It just seems to me that the more you introduce into the hanging system the more there is to go wrong.
The HH knot is just an old fashioned cleat lashing, using one side of the tree-hugger strap and the hammock rope as the two cleat horns. It's simple and has been holding large heavy things up for several millennia. It also does not slip. What's not to love?
No love here. I hate the tree huggers and Hennessy lashing.