Re: Evolution pickups
I've never considered pickups part of sustain, it's always more about the construction of the guitar and the connection between the string and fret/bridge that matters most. Higher output pickups can technically have more pull on the strings and lower sustain, but it's offset by the higher output anyway. The one time I had an issue with a guitar not sustaining it was a worn out old Floyd Rose bridge with heavy wear on the saddles in particular, when I replaced the bridge with a new Floyd Rose Pro (German) the sustain issue was gone, when I then gave it a fret levelling/crown it improved further.
As for the PAF Pros, I have one in my Warmoth Strat and I like it but it's nothing special and I feel like the Evo's are quite special and really are better suited to high gain stuff, if you want pinch harmonics I'm not sure if there is a better pickup out there. That said again though, I don't think harmonics have a lot to do with the pickups and have a hell of a lot to do with the guitar in particular, with the frets/setup having a big influence too. Play the guitar unplugged, listen to all the harmonics, some guitars just won't do certain harmonics very well and lower action can make that worse.