Good call! We've actually got this on track for the Fall. A while back, we did a Rivet Chino in a Japanese cotton herringbone. It came in a dark charcoal color and it definitely served to dress up the shape significantly. A few of you guys out there might own them. We're going to run some additional fabrics like that in the Fall. That's probably as dressy as it will get, as I'm going to stick with cotton, machine-washable fabrics for the chinos.
This slipped by so I am calling it out. Those charcoal cotton herringbone rivets were a slam dunk, and are easily my favorite non-denim pant ever. They made up versatile as hell while still being interesting, with a fantastic hand to boot. I'd buy another pair in a heartbeat in the new rivet style.