I use Calibre for conversion only. Every day I convert 4-5 documents for proof reading, and then I put them in a directory on the house server, where I pick them up with the Adam. I really don't need any kind of managing or tagging, only a good conversion and to get the files to the correct directory. And that it gives me. I never hook my Adam up to the computer in any way, everything's done over wifi. With the Save to disk I don't have to open ekstra windows and do that copy manually.
As for the Calibre forum I have gotten all the answers I needed in this thread, and it only took me a few hours. So no need to register for another forum (I must be on hundreds of them...).