I do similar with a Travelpro 17" computer brief for 1-night trips. While not big enough to pack shoes, it will handle a pair of dress pants, shirt, underwear/socks, toiletries, Surface Pro, cables/gadgets, etc without issue... everything but the pants and toiletries go in an Eagle Creek Pack It Folder 15 for compression and organization, and then into the main computer/filing compartment. It's a pretty low end and somewhat older bag, so there's minimal lining and no velcro straps to clutter or otherwise minimize packing space in this compartment (it was part of a lower-end 3-piece set like you might find at TJMaxx). This is the only time I travel with a non-rolling bag.