Hello all! Just starting out in the working world and am also taking courses in grad school and am looking for my first "real bag" that isn't a jansport or LLBean (not that there's anything wrong w. them...) I'd like it to be large (big enough to carry school books, folders, etc.) with a double strap: shorter one to carry on my arm/ short shoulder, longer one to carry long shoulder or cross body. (Kind of like the Balenciaga First, City, or Work. A couple other styles have this as well.-- Am I making sense?) Anyway, would appreciate any suggestions... Thanks!