I hit a pothole this weekend, and pinch flatted, with two slits in the tube. It was a sharp metal edged hole around a water valve cover in the street. I lifted the front wheel in time, but the back took the impact.
The 30mm Kinlin rim has no dent or mark on it, and I checked the wheel on my truing stand after the ride. It wasn't affected by the hit at all. Strong rims.