72% is high for wood, anyway, even assuming that somehow the "cigar humidity thing" somehow magically is able to control to 72%, which it can't, not unless it has a wee little refrigeration system or desiccant and a wee little humidifier and some means to measure humidity and switch between dehumidification and humidification (in other words, a humidity control system twice as big as your sax case, which is not what you have).
I don't know what's the desirable value for cigars.
Reeds aren't exactly wood, though closely related.
The purpose of humidifying guitars is to reduce shrinkage and expansion of pieces of wood that are constrained into a box assembly, which will result in cracks. And it's recommended to hold more around 40%. And reeds aren't guitars.
Seriously, in all the discussion about keeping reeds wet/damp/humidified, I have NEVER heard a convincing reason WHY except "oh, warpage" which seems to mean "the tip will be wavy for a few seconds when you first start using the thing".
I don't know what's the desirable value for cigars.
Reeds aren't exactly wood, though closely related.
The purpose of humidifying guitars is to reduce shrinkage and expansion of pieces of wood that are constrained into a box assembly, which will result in cracks. And it's recommended to hold more around 40%. And reeds aren't guitars.
Seriously, in all the discussion about keeping reeds wet/damp/humidified, I have NEVER heard a convincing reason WHY except "oh, warpage" which seems to mean "the tip will be wavy for a few seconds when you first start using the thing".