From what I understand, our site is only the second customer for Output Designer. The original product was designed to print things like POs that need to look more professional than other types of output available for Mims. While I think it has a lot of promise, the product is best considered to be in early beta testing. Some of our POs can be rather lengthy and Output Designer doesn't handle long inserts well at all. After a couple of dozen records are inserted into the template document, MS Word slows down to a halt as it works to resize and reformat the report after every insert. Tim Boughen, a Senior Consultant with the Tequinox branch of Mincom in Brisbane, wrote the product. He demoed it for me on my trip to Australia last November.
Basically, you output your rdl report using XML tags to a particular directory, a service running under NT picks up the XML document and merges it into an MS Word template. For most kinds of report, it works fairly well. It doesn't handle our big POs, though. We have gotten a couple of updates since the first of the year. I'll let everyone know when Bim gets all the bugs out.