Preliminary answer: Yes.
Real test data comparing freezer, fridge, room temp (3 years for some cells, 2 years for some others) hopefully in July. I did test the cells that are coming up on 3 years after one year, and there was a measurable benefit to cold storage. I meant to test 'em again last year, but never got back down to FL where those cells are during the second half of the year, so I decided to just wait another year before re-testing them.