I use the BR 4 and I like it very much. I made replacement to the hardware on the BR.
I saw that Sunsniper has a ballbearing link with a rubber pad to attach to the camera 1/4-20 thread. The ballbearing provides swivelling capability and the rubber ring provides friction to prevent the screw from coming loose. So, I replaced the carabiner/fastener combo with the Sunsniper part. I am making the best of both worlds.
I bought the Sunsniper Strap Pro a couple of years ago, but find it too bulky at the "shock absorber" making it too big to pack in my camera bag. I gave it to my daughter to use.
Just like everything in life, I am still seeking the ideal way to carry my camera and be able to use tripod at a moments notice, to connect to my 70-200 lens collar when I change to the lens.
Then, there is the case of putting everything I need in a bag. Current flying rules are getting more and more restrictive to weight of carryon.
A picture of the Sunsniper ballbearing link is attached.
If the BR hardware has a weak point, it's the swivel pin. A zip tie from the rectangular bracket to the carabiner or lug would provide extra security, and limiting rotation to ~180 degrees isn't really an issue.