I've never tried it. I might consider experimenting with some that I wasn't too much in love with, just for the experiment. With my good ones, I will store them the way I've suggested before because I know it works. .... and is a LOT lighter to carry to the cold cellar.

I've not stored in sand either. Weight would be the big factor and inability to easily sift through and check tubers during the winter. Cedar shavings, vermiculite, or Saran Wrap are what I'm sticking with for storage.