For the past little while, I've been using this Roots bag for my iPad+Keyboard. It's preposterously well designed, and I totally love it for toting smaller loads. It's couched as a ladies' bag, but it works terrific, and I'd say once I removed the silly hanging leather bit, it's manly enough. 
I was concerned it wouldn't fit the new MacBook, so the last time I was in the Apple Store, I asked the staff if I could try to get one in to see. They let me, and it fits *perfectly* which thrills me no end. The one concern is that it has an inner zipper and magnetic closure which would scratch the MacBook. I intend to simply get my wife to sew me a basic, form-fitting, thin felt sleeve for the MacBook and it should be all I ever wanted in a minimal laptop bag.
Shots of my Roots bag, for those interested.
I was concerned it wouldn't fit the new MacBook, so the last time I was in the Apple Store, I asked the staff if I could try to get one in to see. They let me, and it fits *perfectly* which thrills me no end. The one concern is that it has an inner zipper and magnetic closure which would scratch the MacBook. I intend to simply get my wife to sew me a basic, form-fitting, thin felt sleeve for the MacBook and it should be all I ever wanted in a minimal laptop bag.
Shots of my Roots bag, for those interested.