Is this the grocery bag panier you were talking about?
http://www.arkel-od.com/panniers/uti...asp?fl=1&site=
That looks big, and all, but personally I think I could make do with a wire basket on one side and the bug on the other. The bug can be used for bringing school/work stuff around all day while the basket can hold grocery bags and other assorted clunky items. If money was no object, I'd have an Arkel for every occasion, though! I love their products.