I can chime in on my experience this past winter. It started out well but did not end well for me and I ended up losing a lot to rot.
I had them in my unheated porch from around November 15. I think it was the combination of the cold spring and wetness that did them in. I was too eager to get them out and growing and that spelled disaster for me. The ones that I pulled from the porch in March and put under lights inside did magnificently so I have no reason to suspect it was the cold. If I were going to do it again I would put them on their sides and cover them with straw and leaves.
