Cute Dooney. I absolutley LOVE the doctor style satchel. I think the boxy square shape is really appealing. I had one many moons ago in the signature aniversary print.
It is a Dooney all weather leather. And it's not really handbag - sized actually. The dimensions are bigger 12 1/2 X 9 1/2 . I thought it might come in handy to haul my binders around.
My computer won't let me vote for some reason (conspiracy? hmmmm), but I say go for it. I like the simplicity of it. It seems like it would be stylish and practical for what you plan to use it for.
I have something very similar, only mine is black and tan. It's way too small for me nowadays... only about 10". If it were about 17 or 18" it would get plenty of use, but it just sits.