I'm with you on the pinch harmonics!! As much of metal guitar as palm muting.
As for Zak, his harmonics would sound better I'd he didn't use such off the wall tunings. Just my opinion.
I'm not a full on "dun dun dun dun" constant chugger or a palm muter type but it's scattered all over the place in my playing, just not for ten bars at a time sorta thing if you get me.
Yeah I agree on Wyld, he's using f**king crazy tuning that for me is way too stoner!!!!
I think I'm the only person these days still playing concert pitch. I've never f*cked about with alternate tunings, ever. Not even dropped D. Some people are horrified at this but I don't need a tuning to make my sound heavy. Highway to hell riff for example. Heavy as f*ck in my opinion!! And that's ACDC!!! Enough of my ranting!