I saw the older thread on this and it looked like people were curious about Wiggy's gear. I have a wiggy's UQ that is 44 X 84 inches. It is the 20 degree thickness of insulation called L-12. It has nylon sleeves across each 44 inch end with a nylon cord and cord locks. I sewed on some p-cord loops 18 inches down the long sides from two opposing corners to help with diagonal coverage. It weighs 2.7 lbs. It fits into an 8 x 18 inch compression sack and compresses to about 15 inches pretty easily. 44 inches was the widest they would make it, something about the max width of the fabric. Black was the only color choice. Cost $150 plus shipping. It's very warm, just like my 20 degree bag.
I also use my Wiggy full length ground pad slipped between the layers of my blackbird in mild weather. With a 35 degree Wiggy mummy overbag this gets me to 35 or so with a layer of fleece on. No sweat condensation and minimal fuss. Pad weighs 4.3 lbs and is 28 inches wide, compresses so it rolls up smaller than full length egg crate ccf pad though.
I can see other possibilities for DIYers to convert some of his rectangular or desert bags into large UQ's or pods while maintaining their use as sleeping bags, especially since the bags could cost less than a custom UQ.
Their poncho liners are 2-3 times as thick as a mil spec PL and much warmer. The outer layer of fabric is thick and windproof compared to the regular nylon on the sleeping bags and inside the PL. Weight 2.6 lbs in the stuff sack. Cut a head hole, sew on sleeves for cords and you've got a TQ, UQ, or serape. Good for a TQ to low 40's wearing a layer of fleece.