Joel,
I'd heard the "Mr. Slim" name before and the story behind it. Perhaps someone on this site recounted that earlier.
I've never heard of any other nicknames for the Pagoda. In fact, it's interesting to note that the name "Pagoda" was not widely known in the US until the last couple of years. Before then, it was almost purely a European nickname, but for reasons we can only guess -- perhaps even the growth of this group -- it has now caught on in the US too.
When we were debating the name of this group a couple of years ago, there was a camp that was opposed to using "W 113" in our name because it was too technical-sounding and there was a feeling that our cars deserve to have a universally-accepted nickname like "Gullwing" or "Adenauer." We've since dropped the "W 113" in the group's name and many people now know what a "Pagoda" is. I believe that's called progress.
I'm guessing it might be a few more years before the group is re-named the "Mr. Slim Group." :-)
Douglas Kim
New York
USA