JES - Stonewall looks great. (I play across the street). We have a some folks that play both clubs regularly, and the only negative I've ever heard is that they're having challenges with thistle in some of their fescue areas (as are we).
Stonewall old gets a fair amount of play (the red caddy t-shirts are easy to spot). Personally, I love th 4th hole over there.
Stonewall south (the new course) doesn't seem to get a lot of play. Don't know why, becuase the course looks really cool - great vistas, great angles, etc. I've never played it, though.
I guarantee that there are some folks here that know a LOT more about Stonewall than I do. Wayne posted a great photo-filled thread last year- Let me see if I can find it.
Here it is (but the pics are off the original website Wayne used):
http://golfclubatlas.com/forum/index.php/topic,24529.0.html