Originally posted by Nicolas06 All of theses things using the tripod bush looked more complex, expensive and hazardous to me than it should. Even it doesn't fall, I see there more risk to hit the camera on the side.
Finally I decided for less expensive and simpler solution. I just used a classic strap, similar to the one provided by default by Pentax. But this one is make by Op tech USA and overall is more comfortable and bigger, meaning the weight is easier to handle. This would be my advice to stay simple.
I hate classic straps. Taking photos in portrait with the classic straps is just annoying. One of the strap constantly tries to wrap around my hand.
When I wear the sling strap, my camera naturally rests on my body's right side, and my right palm covers the lens easily. If anything would happen to the camera, my right hand can probably shield it. If not, I probably deserve the damage. On the other hand, I can say that people who put the camera in front of their chest/stomach risk damaging the lens when they lean forward. There's always a chance to get scratches on the glass. I'm not bothered by carrying it side way.
As for the loosen bolt... A spring washer plus a locking nut will prevent any bolt movement due to vibration or mild torque. The only two ways to detach the bolt from the camera is 1) intentionally unthread it; or 2) break the bolt. The latter won't occur, because my neck will probably snap first