Are corduroy pants in for men's fashion?

Yes, most definitely. Corduroy is often sneered at but it is one of the few fabrics that works well in all social situations, from the needle type jeans for young, smart suits for formal occasions and the chunkier jumbo corduroy pants for those who are brave and know that everyone looks at them, either in admiration or half mocking but respecting the confidence of a man who wears elephant cord trousers... Go for it and enjoy the reactions! :-)