I received all of my trees from him bareroot back in late 2009. 2/4 had RKN, one was grossly obvious infection, even bareroot, I'm blown away he shipped it. One tree died mysteriously, and another member here had similar experience with the same variety from him. The last tree was OK.
I guess I just have bad luck, although I've heard similar stories privately after sharing my story publicly.
Definitely not trying to badmouth the guy even though some folks have gotten extremely pissed at me for sharing my buying experience publicly. Some folks only want you to post nice stuff for a number of reasons, but I'm more about being real. I posted pics of the worst RKN infection (Marseilles), the Hollier was infected with something that led to it scaling over and dying - fortunately it didn't spread. I airlayered my LSU Scott's Black due to mild case of RKN that exploded in the first year (fortunately prior to up-potting). Kadota is the only tree that didn't show signs of RKN or other infection and has grown fairly well.
Edit: I would just add that when I purchased in 2009, the main reason I purchased from him is because folks loyal to him told me "he HAD issues with RKN, but that was a while back and he fixed that". Wrong. I hope he truly has fixed the problem(s) by now. His infected trees infected my main tomato and pepper beds, I had to gut the soil from them, it wasn't cheap. Those trees cost me more in the long run. I should've ordered from Durio, but I was trying to help an old guy out and save some coin (Durio is expensive).