I am a devotee of the satchel bag. When a bag is "deeper" (or "taller") than the satchel silhouette, such as the MK bag and the "Sunny" hobo above, you must dig for every item in what is essentially a black hole.
If your bag generally has only three or four items in it, it would probably work. If you regularly carry 12 - 15 necessary items, depth is not your friend.
That said, I have ruined more than one satchel bag with the heavy sunscreen I wear on my arms in summer, so for summer this year I'm switching to a cross-body style. Again, one with not too much depth, for the reason listed above.