I watched the video on their web site on how it works and it just turned me off from them a little more. It's right in the beginning when they loaded the stake bed, it didn't appear to flex the leaf springs at all and the overloads hit the stops. So unless there is some sort of variable spring rate built in to that goofy shackle it would seem that it possibly could go from a soft suspension to hard real quick. And another negative is with how soft that thing looks and how quick the suspension was jostling about in that video your still stuck with making sure you have antiquate shocks to keep up with all that movement. They say the load capacity isn't affected but I don't buy certain aspects of their sales pitch, I want to read that 3rd party review now.
Additional thought: I would like to know just how much weight they put in the stake bed to make it do that. It did kinda look like there was some kind of limit adjustment on the set the stake bed had so maybe its possible to adjust it to where it would flex the leafs before hitting the over loads?. I'd still be a little apprehensive about spending that much money on something like that.
