There are some exceptionally cute mid-range bags around at the moment and here's another that could fast become a long-term prospect: it's by Modalù and ticks all the right boxes if you're looking for something feminine and wardrobe-friendly.
'Dove' is also available in black, which would be super useful in terms of matching, but I rather like the warm shade of purple shown here, and can see it going down a storm with black leather and matching tights in Autumn,
£125 at John Lewis
Related: Dorothy Perkins' purple square-fit shoulder bag | Jill Sander purple calfskin shoulder bag