I currently use the Ristretto as my daily work bag carrying the Macbook Air and some files. However, I am finding the Ristretto too small for my needs. I usually carry a water bottle, a few books, power cables, and a portable hard drive. I really like the look of the Checkpoint Flyer, but am wary about using it as an everyday bag. I probably air travel once every two months so the convenience is not that crucial. For CPF owners, any pro and cons about using it as an everyday bag? My other option would be the ID, but I am more attracted to the design of the CPF. Thanks.