The only difference between this and the whoopie hook illustration is the elimination of the larks head between the whoopie and the strap.
I've been coveting the TI Dutch clips for a while now. I hope to pick some up in the not too distant future. In the meantime, the biners are serving me well. One benefit of the 'heavier' carabiner is, it makes it easier to 'swing' the hugger around a tree, especially higher up.