Genuine Draft uses a SnugFit on her Blackbird and loves it. In fact, on at least one occasion, she brought her SnugFit and forgot her hammock. Car camping, so no problem..but still.
A Yeti will do fine in the winter IMO. I spent the past winter up in the hills camping with my Winter Yeti and had very positive results; temps well below zero. Pack or pads under the feet and sheltered in the loving wrap of my SuperFly with the Winter Yeti below and a JRB RMS on top; winter life perfected