I had bought some Goretex in DPM ages ago from Pointnorth which has just sat in my 'potential projects' bag. With my cheapie sewing machine my old ma got me for birthday a coupla years ago (best present ever oddly enough), I made a Goretex poncho-basha using my battered old German example for size, pattern and features. All seams were sealed with Goretex tape I bought at the same time as the material. Corners, popper points and grommets were reinforced with green cordura from a cut up old rucksack. The resulting poncho-basha still needs to be tamed with a belt in windy conditions, still gets wet inside in humid weather, but at least it is waterproof and breathable when the climatic conditions best suit Goretex. I use an old pair of German army Goretex trousers when weather really turns bad, but usually only need a pair of gaiters for full protection. It also cost a fraction of the price of a Goretex jacket and trousers combo from one of the big outdoor clothing names for the sake of a few hours cutting and sewing. If your partner does the sewing in the house, you don't even need to do that yourself!