I'm considering purchasing the 13" Staub cast iron enamel Gratin pan that comes with a lid from WS. Has anyone else used this pan and/or have thoughts on the utility of a lid for it? Do you think this pan would work well for cooking fish too, and would you use a lid or not to do that? I'm definitely err on the beginner side when it comes to these things, so appreciate advice from those with more experience. Thanks!