Glad you posted this...I have had the same thing on my mind. I am more of an acoustic player and consider a bone nut (and saddle) non-optional. I have a PRS SE that I generally like, but the nut material always niggles at me. It just seems too soft and spongy. As soon as I get something else done on the guitar, I think I will do a nut swap. But reading this thread, I am starting to think maybe the need here is more psychological. The nut on my G&L seems like a hard and slippery material, and does not bother me as much.