I have done that for years, I put the loaded film holders and Grafmatics in ZipLok bags before I put them in the refrigerator. I keep them in the bag while I am out shooting and open the bag only when I am ready to use the film. Hence I have not had dust issues.
Ha ha... you too, now. Oh crap... now me. All those darned emails... Glad Ziplock this... Glad Ziplock that... buy me... no, buy ME!! Awe crap... awaiting the deluge of SPAM emails.
I find zip lock bags counterproductive as they generate static and attract dust. Good idea to use the anti-static bags.. I save the ones that circuit boards come in..
Insulated soft lunchbox from target holds 5 film holders and doesn't blow away while I'm taking a picture. Never had big dust issues here in south. More eco friendly.
They also make great cases for small wooden field cameras.