Hi diksmack,
This shows that the windscreen when mounted restricts access to the rear seat. You can still store things between the screen and the seat. This also shows why you should have a black interior! (see below)
Here's another view, with the screen folded down.
You can also use the screen with the soft top, or even the hard top, up. With the top up and the windows down, buffetting and noise is definitely reduced.
cheers,
Bill