I agree with TindyTim. The whole point to most rapid prototyping machines on the market is to create a quick mold out of resin for the purpose of using it to mass produce product. Until they find a way to make ice do that, you'll only have a nice looking hunk of ice with NO engineering usefulness, unless of course you have no vision and need a physical piece in front of you to have any idea whats going on. Also, I don't think this will take ice sculptors out of the equation, seeing as how the ice pieces they make uses a method of chilling ice which traps in air, causing the pieces to look a little cloudy, and therefore probably not the beautiful artesian transparent sculptures people pay big money for.
All that aside, I think the cold drink applications are amazing.