Slippahs,
I am not sure of your gender but the At Work Collection For Her from Briggs and Riley has a bag called Montauk Business Tote. It has a middle lap top slot. There is loads of room on either side of it, pockets etc. The lap top slot can even be removed if you want more of a carry all look. If you are a man, then it might look a bit "Eurpoean" as Seinfeld said!
P.s I don't work for Briggs and Riley, I just like the product.