+1 Once in a while may not hurt. It depends on the detergent used, but generally the detergents are quite abrasive. They have to be abrasive to clean effectively with no cloths/scrubbers. Over time, this can wear on the finish and edge. Some glass gets etched by the detergent over time, and typically, glass is harder than steel. I hand wash all my knives except for those I don't care about.
I'm sure that you're aware of all this, but I couldn't resist. I'm not anti-diswasher by any means. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

Congrats on the score! <img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />