Check out this article by Ted Teng on MSD2D.com which explains how to display lists/libraries from one library  in another. I think the second view may be a read only view, but I’m not sure as I have not tried it yet.

www.msd2d.com/.../Tip_viewitem_03.aspx%20Parts&id=66b9f0e6-516c-4d36-afb7-ba57bf978c05

Also, www.corasworks.com sells a web part that can “roll up” the content from various lists/libraries into another list or library in a different area  or site.