I'm with K on this one. I have a (cheap, from the market) leather D-shaped shovel purse for coins, and a (handsome, gift from a Chinese student) Prada wallet for notes and cards. I don't like having coins loose, and I find a single wallet too bulky.
If we still had pound notes, I would not carry coins, they'd all be tips or in the charity boxes. Can't afford to round up to the next fiver every time though...
That Cartier coin purse is lovely, K.