Just curious, does anyone have both of these? Is there a size difference, like with the epi 25? Would you wear them in different situations or are they interchangeable? Is it pretty heavy? Can it double as a carryon? I have a Damier Speedy 30 but am trying to decide if I also want a big black epi speedy too, something pretty incognito for a handheld work bag. I already have a mono 25 and a red epi 25 speedy as well. I was thinking of getting a mono 35 at some point, but in my job I need to tone down the logos, so I was looking at the black epi speedy instead and saving the monogram stuff for when I'm older. Thanks in advance for any info!!