https://www.ebay.com/itm/403758912901?h ... BM7O_P9-Rg
I noticed there are several Columbia PVC coated nylon lighter weight rain jackets on eBay. These were from the early 1990s and while on the lighter weight side, the pvc feels good, the jackets are waterproof, the matte look is ok and not attracting instant attention on the way a Stutterheim Opal type fabric would, and the jackets fold reasonably well.