Primarily looking at bags that are "packable" within carry on luggage without taking up a lot of room, with an eye for aestetics.

Saw this Marc Jacobs bag today, it was very compact you could roll it up and it would take a very small amount of room in a bag.

http://www.barneys.com/Packable-Back...efault,pd.html

Kind of pricey for what it was, its Barneys. But what else is out there. I saw the Tom Bihn backpack/packing cube Aeronaut
http://www.tombihn.com/page/001/PROD/100/TB0925
but it honestly looks kind of hokey and non-stylish to me (looking for something nice I can take in a city for a day to carry stuff). I have a messenger bag but I kind of prefer the look of a backpack.

anything else in this category that looks pretty nice?