I made them just alike, because that was easier, for me. I really think the bags turned out great.
I put in two interior pockets, one on the back and one on the front of the bag.
Sharon wanted her satchel to be extra large, and I think this fills the bill. I haven't decided exactly what to do with the second bag. I'm thinking of giving it away to the mother of Oden's half siblings, but we'll see.
May your bobbins always be full,