SaddleSack Pair, a set on Flickr.
The Rivendell Sackville line of saddle bags is the nicest bags I’ve come across. Well built, and great looking aesthetically. They also hold a tone of gear. I keep tools in both of these bags, but have room for a small iPad or laptop, a change of clothes, and in the larger Medium bag, I have hauled that plus a growler of beer with room to spare.