So I tried the background load following Acadia's final modifications. It certainly does give you control over the background and a totally different shadow affect... or lack thereof. Worth while playing with for sure.
One thing I noticed however was a signicant drop in the resolution of the backdrop. I attach here side by side images. There is a slight difference in placement of background between the two but I am sure that is not the issue. Perhaps a lighting tweak. This was just a 15 minute knock off excercise.