Any thoughts on or experience with Hennessey Hammocks Four Season Super Shelter? How about the over cover with breathing hole? My journey begins on 2/14/09 from Springer and I have the Expedition Asym and a Golite 20* down bag. I sleep rather warm and have looked at JRB's quilts but would like to think that the extra $$$ could be spent on something else like pizza! Either way I think it is best to be warm and safe with an extra pound or so rather than shiver the ice off of the trees!