Yes and certainly, respectively.
I use a combination of A-T's p-mount (ATN152MLP) and standard-mount (ATN440MLa) styli in my M12E/U-equivalent cartridges, but they all date from a time when A-T was still making light-tracking styli with beryllium (and boron) cantilevers, and those are all long out of production. So the answer to this question very much depends on your budget, your turntable model and the availability of affordable styli. I hope others who are up-to-date with A-T's current stylus lineup and know which ones can track well at 1.25 grams (if any) will come forward. It may be that with the current trend to higher tracking forces, you may have difficulty finding off-the-shelf A-T styli that can track at the p-mount standard.