In search of the perfect travel tote, I just ordered Baggallini A La Carte, which is large but still doable for everyday use. It has the double zipper pocket that can convert to a sleeve over the roller bag handle, it has three roomy open pockets on the front, and important to me, it has rolled leather loop handles with a long drop. Have not ever liked the feel of the Baggallini fabric, but maybe it can work.
I also bought from Travelsmith the Sondra Roberts Carried Away bag, which is a good looking and much larger nylon tote similar in style to a Longchamp, except it has two good zip pockets on the front. The long rolled leather loop handles hook perfectly over the roller bag handle for the bag to ride on the front as if using an add-a-nag strap or J hook. It will fold flat, weighs very little, and looks stylish with saddle leather handles and trim contrasring with the nylon.
The Ellington Amelia I do not like because it has ordinary flat fabric straps and so many clever pockets and features, it is just too geeky.