I have a navy hopsack suit, made last fall, and it is a great suit. Liked it so much I had a lighter gray one made as well.
As pants, they work well. My tailor initially recommended as light gray trousers to go with a blazer. From there, I was easily convinced to use the navy hopsack and lighter gray for a suit. I think it is made up by Holland and Sherry but that book is no longer being made. I don't recall the specific book but I can track it down if you like.