I am looking for recommendations on a professional shoulder bag/carrying case that could also double as just a carrying case in a backpack or something. I travel for my job so for work I'll bring my briefcase so a sleeve like the incase ones would be nice but i want to have an option to carry at as a shoulder bag alone too. I know that's a big request and not sure if something like that exists. Here are the ones i found so far: Case Logic LNEO-10 Ultraportable Neoprene Notebook/iPad Sleeve STM Bags iPad Jacket rooCASE Light N Slim Netbook / iPad Carrying Bag Any other suggestions or feedback on those. I really like the idea of a horizontal bag rather than a vertical one.