It doesn't have to save multi functional but would be better if it could. I might go look in the shops see what there is before looking online properly as last time non of the online ones fit well and I ended up having to go the shop anywayMy personal opinion would be to go for a black shoe. Only because it will go with everything if it needs to be multi functional.
Depending on the budget, I would recommend Kurt Geiger or Carvela, very comfortable fo all day wear.
On more of a budget, try New Look or M&S.
---
Thank you