I am not sure if that looks especially "diaper-bag-ish" or not, but its what I have and I love it. Having a bag that could be a backpack was very important to me, so this worked.
Mine is pink and so ugly but it's my first baby and I really wanted to make it girly. Dh hates it but it even came with a second little bag just for him . Vera bradly had a beautiful black bag in the store! If you don't want the patterns. This is my bag. I'm not ashamed!
It's a diaper backpack. It's got 12 pockets and a diaper wipes pocket on the outside. It's the same size as a regular back pack and it's very spacious. Tons of room for whatever you want. It's affordable. Only cost me $45 on amazon.
Re: Diaper bags that aren't ugly..
I have a Timi & Leslie Charlie in mustard and I love it! I'm also digging the turquoise color it comes in.