I am still trying to decide what to get to carry at theme parks/the zoo/etc... I thought I wanted a swing pack, but today at the Children's Museum I saw this lady walking around with her Coach Signature Duffle (Black) worn cross-body. It looked great, and can hold much more than the swing pack. What do y'all think...should I stick with the Swing Pack or go for the Duffle (smaller one...NOT the Medium)??? Thanks so much!