I finally got this to mostly work. I may have forgotten to fix the permissions the first time; I don't recall. I too have the dual settings thing pop up when I hit the menu>settings option. For now I just pick the one on the right and click "just once" until I know that it's stable. I have gotten a force close or two I think when I went to "favorites". Like someone else mentioned, I do not have the list view option, which I would really like to have. The biggest thing that I was wanting and appears to be missing is the "search" functionality that my friend has on his Sprint S5. He can search through the settings via a search/spyglass icon up top. Maybe there is an updated version of this somewhere since this was posted back in Feb. 2014.
EDIT: I found this post via another website. Using that secsettings.apk file enabled the list view for me. I still get some force closes, but it's bearable. Don't forget to fix the permissions.
EDIT: Force closes every time I try to put a widget on the screen. Kinda annoying.