I have used it. It actually works/worked very well. I used it to hold a Ballista event. You use the forms to tell them the objects you want placed and where (there's a special command ingame to get the exact 3D position of where you're standing), then when the date for your event comes up a GM will work with you to make sure everything's set up how you like it.
Here's a couple pics from my event (was several years ago)
http://i16.photobucket.com/albums/b1...psbig7evc2.png
http://i16.photobucket.com/albums/b1...psjhtakizm.png
That orc guy wasn't actually in the list of objects to choose, the GM made a mistake but I said he could just leave it that way. :P
You can customize the things the NPC objects say, as well.
