Yeah, that is pretty much how I like to carry my pack with load lifters, also. In fact, that is how my training pack is set up. It sort'a squeezes my upper chest more than sitting down on my shoulders.
Weird, with a 40+ pound pack it doesn't bother me, my training pack is set up like that. With two weights on the shoulder straps (2.5 pound ankle weights as I remember,) it forces it down onto my shoulders. It kind'a grips my upper body and sets on my shoulder harness. Ideally, this should be good, since it allows me to stand straighter, but the first night is annoying and by the second day/night it is painful. I added a couple metal "D" rings to the base of the load lifters and simply sewed the bags around them. I tried this with three packs. An old Kelty external frame, a real old blue pack I use for training (magnesium internal frame) and an old Trek frameless. They all have load lifters. I spent about two weeks out in the woods with them trying to decide whether to get an Aarn pack, even though I was only hauling about 30pounds at the time. All had me going for tylenol/codine by the second night. Good idea, doesn't work for me.
I spent a couple weeks playing around with the idea. I tried to rig a stay (arrow shaft) in the front pouches to transfer weight to my hip belt, but that was a pain to get off and on. It would swing a bit oddly. I spent a couple days with them, trimming till they no longer did anything. I tried a piece of foam, better. I moved the attachment around on the hip belt, but this got in the way of seeing where I was putting my feet or swinging my arms. I tried to remove one and use it as a front pocket. I couldn't see my feet at all with anything substantial in it, and, it was a third clip that had to be removed/added taking the pack off/putting it on. All were a bit awkward, often twisting the shoulder straps when lifting the pack onto my back.
Anyway, I am sure the Aarn style packs work for others, they didn't work for me. Even a water bottle on my shoulder straps can start to be a problem, though.