I had some scraps of both PolarGuard Delta and Climashield XP and have thought about spinning some of (one of them) into yarn. I am thinking about spinning enough to make a small weaving project like a vest to see how it works.
This is what the PG-Delta looks like spinning a little of it. This was a small test this morning just to see if I could spin it. Yes, it can be spun into yarn as you can see. To weave something out of it I would spin it for a "Woollen yarn" vs spinning it as for a "Worsted yarn". I don't know when I will have enough yarn to make something but expect it will be after my Oct Hike. I am not sure it is worth the time it will take but I will make something small first and see how it works.