I got my Wiggy Antarctic with extra outer bag.
The real reason I ordered Wiggy's bag was the Baby bunting bag Wiggy's is making. The idea is to use down WB Black Mamba TQ and WB Yeti in my canoe or pulk trips in semi cold season and put the (sometimes wet and dirty) dog in Baby bunting to protect my down insulation. It likes to lie on top of my feets in hammock.
I just "inserted" the dog in bunting and put the combo on our sofa. It stayed there about 30 min and seemed to enjoy itself. Seems a great product.
I will post some information about Antarctic at some point. Season is the best possible, weather forecast promised <-20 C to the end of the week, but I'm very busy.
One fact for You all though. Antarctic is a very big bag, about 50 liters in its compression sack with outer bag (It came with two compression bags, one XL and the other XXXL), usable only with pulk, canoe or other similar or bigger vehicle.
Quality and ruggedness is TOP notch! And as someone said this always makes weight go up, so remember that when comparing against UL down gear.
I have not ever found a warm synthetic bag which is good for semi cold (from +5 to -10 C degrees) usage (when in fear of true cold weather under -15 C degrees). It is always the same story: First too warm and then at about four a clock it gets cold when the condensation starts to have an effect. I think down is better because it lets the early night vapor go through better, so in semi cold season there is no worry if one has bit too much insulation. I hope Wiggy's will solve this problem.