Okay, here's some info for you.
I don't have a 696 so I have no idea how big the underseat storage area is.
However, my S4RS under seat storage area is roughly: 8.5" x 6".
The depth varies, because it's concave, but it's about 1" at the shallowest and 2" at the deepest.
Anyway, from what I can tell Ducati makes two document storage holders. One with the new logo, and one "old" one that just says Ducati in red:
New:
"Old":
I have the "old" one. I bought it from the Ducati dealership in Bologna early 2010.
It is roughly 6 3/4" x 5 1/8".
I have to assume the "new" one is just about the same size.
So if the 696 storage area is roughly the same as the S4RS, you should be good to go.
It's also only about $15 online so it's probably worth just buying the thing and if it doesn't fit the bike you can toss it in the car or something.
Hope this helps!