I finally had time to try the Cosmo bag from Amy Butler's Style Stitches (http://www.amazon.com/Amy-Butlers-Style-Stitches-Wonderful/dp/0811866696 ) .
It was harder than I anticipated but I love the way it turned out.
It is larger than I thought but I never really checked the measurements, I just fell in love with the bag. It would be perfect for a diaper bag or a weekender, I think it will be a little too large for everyday use
It has tons of pockets (2 on either side and 4 large ones on the inside)
I would love to try another one for everyday but I would shrink the pattern next time.
Now... I need to find a pattern for a matching wallet :)