Mzungu strap might be a good alternative for your needs.
It detaches and attaches quickly and easily with carabiners.
Much less expensive and doesn't attach to the tripod socket, but to the regular neck strap attachment point on the camera. Doesn't have all the bells and whistles of the BR, like pockets and shoulder pads and all, but it's very functional and, with a little DIY, you could add all that kind of stuff to it pretty cheap if you really wanted to (I don't).
I've been using the Mzungu for probably about two years, and haven't found a need or want to go to the BR straps. I've used it with Canon 40D, 7D, 5DMKII and all lenses up to 100-400mm on it, with no issues at all. It works great for me.