I'm interested in these mudguards too and have emailed Chris. The large reduction in unstrung weight would be a welcome side benefit but given that I had mine blasted and powder coated about four years ago due to the rampant corrosion and that they are now corroding under the powder coating as well as having had to fix the rear stay on one of them twice this year I like the idea of corrosion free mudguards that are hopefully light enough not to tear themselves apart. I do want them to look reasonably like the originals and would be inclined to paint them to avoid the obvious carbon fibre look.