Yes, a couple times. I just made worm bins in the fall to have through the winter, so that I wouldn't have to trek all the kitchen scraps through the snow to the compost pile (that was before I moved south!
). I just kept them going until spring. Once it was warm enough, I dumped the worms back in the compost pile and used the castings in the garden.
In the meantime though, the bin gives off liquid leachate, which is moisture from the decomposition going on, enriched with worm pee, which I collected and used for my winter indoor seed starting operation.