I seem to remember reading somewhere that cigar cases are not really good for keeping mics in because they are designed to prevent the cigars from drying out (? I don't smoke, what do I know.... But they are called "humidor"?). The upshot that I remember is that a case that breathes is better.
Of course the difference might be in short term transportation to and from a gig and long term storage at home.
Can someone clarify this for me?