What's the binding like on these? Glued or sewn?

I decided to retire (effective yesterday), so my collecting days are over (again!), but I will try and pick up a loose Gawain from eBay at some point. Even though I already digitally de-texted the original paperback cover to get the art, I'd still like a hardback with that jacket. The in-house artist that did that, S&G, FoA and Maldon did a great job, especially with the good match with Sanderson's interior woodcuts.