Hi Scatterbrained,
to be completely honest it wouldn't bother me disconnecting the strap, I'm more concerned about the strap breaking or unscrewing from the body..
It seems the blackrapid would be as susceptible to this as any other strap?
Ok, a couple of thoughts here - BR is made from ballistic cloth, so no, the strap is going to going to give out. You could put it over a large enough tree branch and suspend your entire body weight from it for days, still won't break. The weak link here is not the strap (even the ones made from relatively cheap nylon are much tougher than you can possibly imagine) - the weak link is where the strap attaches to the camera.
If you are using a black rapid strap and a black rapid attachment you shoudn't have a problem. The problem most people run into is that they use something like a black rapid strap and then attach it to the ring on the bottom of a standard tripod mount quick release which of course was never designed for this purpose. The tripod mount ring fails, camera falls. So if your going to attach it to the bottom of a tripod mount, buy the black rapid replacement for the tripod mount screw/ring - which is specifically designed for this purpose. Even if you only intend to use it with a cheaper strap, it would be well worth the investment.
BTW I own a Black Rapid CS-5 myself, best money I ever spent. Worth every single penny, and it is just so much better than the cheap knock off I tried originally it isn't even funny. Night and day comparison.