I can't answer your questions, because his attitude turned me off long ago. The laddy doth protest too much, methinks. I do know far too much about insulation, though, from many hours of stab-me-in-the-eye-please training.

Lamilite is one of the earlier continuous fibers, much like the original Polarguard, which you can still get in lower-end bags like Slumberjack. Polarguard has moved on to hollow extruded fibers--first Delta and then 3D, which seem to give equal warmth for less weight. None of them bounce back like down, which is why down lasts for decades and synthetics slowly compress under heavy use (or simply being stuffed in a sack and not used). Wiggy's keeps the old tech and prints new advertising.

It's not terrible stuff, but it's heavy. I've made my own views clear on here. To be honest I do own two fiber bags, but I see their use as very limited. I'll take a fiber bag kayaking/canoeing on short trips, or backpacking in the rainiest weeks of spring in the Smokies, when it comes down like it's getting paid. That's about it. I also have one that I've cut in half to use in winter for my dogs, because they never take off their wet clothes before they go to bed. :-] Since I used to work in a gear shop, I picked up all of these for very little money.

If you feel the need to have a synthetic bag, there are other companies that try to keep weight in mind. Sierra Designs is one, and it has been in business for two decades longer than W's and is still going strong.

I don't want to hijack the thread, either, but weight of pack is a real survival issue. As Chouinard (the founder of Patagonia and a proponent of ultralight climbing) says, "If you have bivy gear, you will bivy." His point is that every piece of gear carried limits your range of travel, and there is a tipping point at which you are more likely to stay put rather than walk out. With a light pack, I can walk a lot of miles every day if I have to without jettisoning anything, so I'm closer to the car/cabin/escape from situation with my full kit. If a situation has no escape, then yes, heavier bombproof gear is preferable, but in my location I probably can't walk two days in any direction without hitting a road, so I prefer mobility.

I think that if Wiggy's really was the best, their bags would be carried by most long-distance hikers. Those are pretty much the only folks in modern society who spend months outdoors and cover thousands of miles without a vehicle. They are awfully good at ferreting out the best gear. I've met hundreds on the AT and at get-togethers like Trail Days, and I haven't seen a Wiggy's bag yet that I remember.