Upgraded my Ibanez RGD with a Nazgul/Sentient combo, Sperzel locking tuner set, Graph Tech Tusq nut, modified the Gibraltar bridge to be more comfortable while playing and had the gloss sanded off of the back of the neck. The original Gibraltar bridge has sharp edges that dig into my picking hand and makes palm mutes really uncomfortable. I was going to buy the Gibraltar II as a replacement but my tech buddy offered to round the edges down for no cost Now it's actually really comfortable and I'm not getting stabbed when palm muting. This thing sounds great and plays even better, I've never had a guitar with Duncans but I'm digging these.
You can see how sharp the edges are on these, weird design: