I went thru the same process of making my own strap. In the end I bought the Black Rapid screw for the Manfrotto quick release because it is a very critical failure point and hard to make with the tools I have.I like this double connection point strategy.
are those BR lugs really locking? There seems to be a few bad reviews on all the sites talking about cameras crashing to the ground that scared me. I usually walk around for hours at a time with a 24-70, so it's often quite heavy.
Neuro, have you checked out the BosStrap? What do you mean when you say "neck strap - not a good way to carry a camera with a heavy lens, such as a big white zoom"
Would you rather have the camera upside down, for easier transition from hanging to shooting? or are you just saying the neck straps are a potential point of failure?
I really like how the BosStrap uses only one side of the neck strap attachment points, and when it hangs it is really comfortable with an easy transition to shooting.
I'd be interested to learn more about BR straps, but at the moment. However, I really like the choice I made, it's a lot cheaper, and ultimately, I think the neck strap connection point is safer than the tripod mount.