Rectangular Baking Cloche – size?

Rectangular Baking Cloche – size?

(First time poster, long time reader).  Ideas sought please for the ideal cloche…

I am talking to a local potter about making me an oval or rectangular bread cloche that would fit 850g dough weight oval loaves proved in bannetons (the bread size/shape I normally make).  

I’ve got a few ideas but I’d love to hear anyone’s thoughts on what their ideal rectangular/oval cloche would be like?  Shape, handles, internal dimensions, materials…..whatever you think will work…

Thanks.

Source: Fresh Loaf