Ah... double slim jewel cases, an extra space saver. Yes I use jewel cases with a clear front so I can see what's inside, but I want an aluminium box to put the discs in anyway, so light isn't an issue. Maybe I should get those double ones and a labelling kit though.
Francksoy, I think that the question is why not use CD-style cases? If there's no DVD-style slip for the box, then why use unnecessary space up for empty box height?
Is the common consensus that these wallets are a no-no then?