Doing like the Charvel, so Sperzels+graphite nut. On the Charvel, I use my 'cheater bands' to keep the strings from jumping out of the nut on divebombs but I'll put a string tree on there if necessary.
Of course, if I go Speedloader, I'll obviously be using the matching nut to go with it but I haven't mocked that version up yet.
But yeah, I'd like to see Rusty get his name on some stuff that gets more circulation in the metal community than he has in the last few years. I agree on Periphery. After the whole "OMG! BULB IS DJENT MESSIAH!"-ness washes away, there's a pretty good band that, compositionally, has some music with non-DJENTDJENTDJENT ideas that can be attained.