Figured I'd report back now that I've probably got 10,000 miles on the tires.
I've really liked them. Noise still is not bad but has gotten louder as they have worn. We run them to Myrtle Beach, SC and back in June. Hit some serious rain near Asheville, NC. They handled it great at 70 MPH including standing water. Also had a major hail storm in eastern CO that also gave the Generals no issue. However they suck in snow, a late May stormed proved it.
Wear is hard to judge as the first 3000 miles was very hard on them. CM-prerun, Farmington NM, Arch Canyon, and CM11. All took their toll on them. Since then wear has hardly been noticeable. No chunking, just rounding off the sharp block edges as expected. I've settled on 13psi for trail service.
Mud, have not seen any but I would guess they would be average at best. I consider these an aggressive AT tire which is perfect for my DD truck.