Me and my 6 post are going to brag for a second then I will explain my point again. Im a firefighter for a small city. Im certified in high angle rope rescue and have a "little" time spent in a safety harness and hanging on a piece of rope. Tree stand safety harnesses are just that a safety measure.IMO used for more of a extra leg or anchor point to help keep your balance. Thats what they are good for. I hate to tell you but if you blindly fall out of your tree stand wearing any harness its gonna hurt, a lot! And if it happens to me, after the fall i wanna be able to get out of my harness,and back on a tree step or back in the stand, and the least number of buckles or straps, the better. So the harness that came with my API shooting star 10 years ago, or the nice harness that came with my Lone Wolf will do just fine. Im not sure how using these harnesses are "skimping" on my safety, im sure its what most people use today and for the last tree stand era.
Also, IMO HSS vest are heavy, and if i sewed my Lone Wolf full body harness into a Wally Wold or Primos bow vest it would be a lot lighter, just as safe, more functional and save $90.
But just my .02 worth
Also ide like to add that with any harness, it all about wearing it and anchoring it to the tree the high way, most people i see use a harness, use it wrong.