A gallery I was working at had a very strict "bubbles out" policy. In my experience, bubbles face in unless the piece isn't wrapped in plastic/paper/glassine, and act like little delicate fingers suspending the item in the packaging. Bubbles out also seems like a way to guarantee you'll not be able to reuse the bubble, because the tape will rupture every bubble it comes into contact with upon removal.

Can you good people give me some closure on this issue?