Update - I just got a couple of the Bluffworks Meridian Dress shirts in...
I love, love, love this company. OMG they make great stuff. Definitely 'dressy casual.' I wouldn't want to match it with a tie, for example. But I threw it under my Bluffworks Navy Blazer, and either a pair of khaki or grey Bluffworks pants, and I'm golden.
I'll update after I've put some mileage on them.