Amazon delivered fast and I got the Icon fender skirts installed today. They are not an exact fit. The radius around the wheel opening is not identical. And the radius around the bottom is not the same either, so it needed to be trimmed. But the overall length and width is very close, similar hole spacing, and with a little trimming to improve tire clearance I made these work. I think the thickness of the plastic is very similar, and I would not consider these an upgrade. Pretty much a straight across trade as far as quality.
Just a heads-up if you need to purchase. This isn't a 15 minute job to swap a few screws. You'll spend some time making them fit. They also don't come with the holes drilled, but it was obvious the originals didn't either and the assembly guy just zip gunned them down fast. It's just as well, since I didn't need to try to reuse the existing holes, and had the freedom to place them where I wanted.