It actually worked quite well.Split in the back for horse riding.It kept me dry without rain pants."waterproof boots" weren't though.
I've since got a pair of overpants made from the same stuff they work well keeping the wind out for the winter here.
After I read your post I googled "wax cotton jackets and saw one called the "Steve McQueen looked ok.I know the Belstaff/Barbour are practical