Yes, my question was more related to drips and such from inside the tent - condensation shaking off when opening the fly, and general thrashing about. This time last year, I had frost inside the tent that came down in chunks whenever I moved, and thoroughly soaked my old bag. The only cold-weather bag I have is a 0° cabin-type, non-backpacking bag that was not water-repellent in any way. So as I stand here with a can of silicone spray, preparing to douse my old bag, my mind began to wander towards owning a down bag.