I'm actually down to one Vintage Plus now :) I traded the sunburst to Flashheart for an ESP Viper, and the one in the middle for my friend's snow white ESP Eclipse full thickness (with nailbombs!) I'm routing the one I have to HSH and putting a Painkiller (or something?)/Trilogy Suite/Nailbomb combo in it :D
I visited about 10 music stores in Sydney, and one of them had scratchplates where the screwholes seemed to line up okay, but I was only looking for HSH pickguards at that stage so while the salesman was wasting his time trying to tell me an SSS or HSS pickguard would fit I didn't bother double-checking myelf. I doubt he looked at the neck pocket, either, and for some reason on the VPs the cutaway on the pickguard is deeper than usual (or deeper than the StewMac one). Plus, the salesman didn't immediately know what HSH meant, so I'm skeptical...
Still, there's a chance that an SSS pickguard could be sourced locally (if only in a few colours), but I think probably going to the website I listed would be the fastest, safest, easiest, and probably cheapest option ($41US shipped for basic 3-ply).