This is not a complete "success" story, but it did show me that I can not make assumptions about what an individual with a disability can and cannot do.
We had a blind student who was adamant about getting student employment in building services cleaning guests rooms. My thought was that he wouldn't be able to accomplish many of the tasks because of his visual impairment. He was adamant that he could do the job, so we let him show us how he would accomplish the tasks of cleaning a room. Although it took him significantly more time to clean the room and there were a few issues (eg. smudges on the mirror, a piece of paper in the corner). He did a fairly good job and completed some tasks surprisingly well. The time that it took him to complete the job was an issue though and he was not hired for the position.