I took these two today using the S95 and a Sony VCL-0630 S camcorder wide-angle conversion lens. I held it by hand against the end of the lens as I shot. The top one was taken at 28mm-e at 0.6x wide, which works out to about 17mm. The conversion lens performs well at center, but gets pretty fuzzy at the edges. It reminds me of the Lensbaby.
For the bottom shot, I flipped the conversion lens over, which had a magnification effect. What I learned was, never throw anything away if it seems useful. Its true purpose will reveal itself to you in due course.