I have always used a changing bag for loading and unloading all my film, including 4x5... the large one from Freestyle, most recently. With 4x5, I found that having the bag lay all over what I was working on to be problematic. But then I found, at the Container Store, a collapsible metal shelf... basically a flat surface on top with legs on each end that fold under it when not in use... so it folds flat. I put that rack into the changing bag, along with the 4x5 holders and film box and then snap the legs into place... et voila! instant tent - - with the benefit of an additional higher level flat surface on which to place the loaded holders to keep the lower work space clear - - and for only a few dollars more than the original cost of the changing bag.

I hope my explanation is clear - - I don't have a digital camera I could take a picture with. But here is a link to the folding shelves catalog entry - - I'm sure there are many other things like it.

http://www.containerstore.com/browse...RODID=10012770