Hi everyone, I'm having a trip to Europe in the summer, Hoo-ray!and am already made up my mind to bring my favourite DAY with me BUT, my friend said that a messenger style maybe better on trip. Now, hard choice to make:should i have a messenger bag or courier bag since i'm only 5'4. I heard that the strap in the messenger bag is very short, is that right? how about Courier? would her be too big on me?