But the S90 has the same problem that many compact cameras have. It is sometimes hard to hold. The S90 is particularly problematic because there are not ribbed or "nubbied" rubber areas to place your fingers. Even with the aftermarket grip I glued onto the hand-side of the body, I did drop the camera once. It is very slippery.
Yes, I can use the included strap, but I find straps annoying. I have pulled pocket cams out of my pocket before, with the strap entangled with my keys. Or, if the strap is hanging out of your pocket it can catch on door knobs and the like, pulling the camera out of your pocket. It isn't a lot of work, but I really dislike wrapping the stock strap around the camera before slipping it into a pocket. With the contraption shown here, I have solved all these problems.
It is made with a length of old fishing fly-line and a button. I just slip the button between my fingers and I can operate the camera and adjust buttons and operate the spin dial with my thumb without fear of dropping. A video would be cool, but the last picture is a result of spinning the camera 180 degrees along its axis with the thumb and fingers of my right hand... importantly, without fear of dropping it!