As already stated the originals in 2012 were 53/10's wired for the 5-way blade switch (so they were 4 conductor, I've grabbed a few sets and singles of the brushed covered 53/10's and they were mostly non-4 conductor wiring so they were likely yanked from one of the 3-way + volume push/pull setups that had 53/10's). They switched over to 57/08's in 2013 when they could no longer reliably source the wire (per Shawn @ PRS), so the current models regardless of what they're calling them (P22 TM or 57/08) come with 57/08's. The original models that were P22-labeled 53/10's are fantastic pickups, I have them in my 2012 P22 hardtail and that thing is clarity city! 53/10's are choice pickups, I'm pretty bummed they can't really get them out on a production model like they used to.
It seems like they still have some sets kicking around at PRS but they're reserved for special stuff like the P24 Experience LTD run they just did (or the P22 Trem I just received, since the original one had the 53/10 P22's in it they hooked me up, and I'm VERY thankful as that guitar sounds incredible too!). If you can find a 2012 P22, chances are pretty good you can get those original pickups in there, but anything beyond that has 57/08's that are wired for the P22 switching setup. Would have loved to grab one of the P24 trems that popped up at the Experience (the top on the one I wanted was beautiful!) as I bet they sound great too!