My thoughts on the Slingsaver from the thread I referenced above:

Originally Posted by Brad

I tried the Dark Mountain "Slingsaver", and found it essentially worthless as its wrap-around strap rubbed into my shoulder making it raw... I chucked it in the trash and built my own.

“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery