The pattern is in Swedish, but some sketches and photos explaining a bit so maybe the pattern can be understood without being able to read Swedish!

If you follow the sketches and the measurements I also think it would not be difficult to change to another yarn.

Yarn: 2 (3) 3 skiens Grey-Black & 2 (2) 3 skiens Black of Teksrena, Lithuaninan Yarn 100% Wool (350m/100g). For poncho in one color ca 4 (4,6) 5,3 skiens.

I have also knitted one front and one back on a knitting machine with help from the sketches and measurement and it also turned out well.