Never tried these, but I like some of the other DR strings I've tried. Right now I have a set of black coated strings on my D-25M. They sound pretty good, but the black is a bit odd, and it comes off. From a distance it looks like the guitar has no strings on it.
Most here may already know this, but just in case -- here's something from the DR company website:
"At DR, we maintain copious amounts of guitars (especially Guild acoustics) for testing. We are partial to Guild guitars for 2 reasons. First, we like them. Second, Mark Dronge, the founder of DR HandMade Strings, is the son of Guild Guitars Founder, Al Dronge."
Dave