Just an update here guys, as I was fucking with MXPCP at pretty high dosages, and I guess I was getting "delusions of sobriety" (a term I almost exclusively associate with benzos). I think this chemical has a very long-lived metabolite that is minimally active to where it's not detectable after having an actual experience.
At one point hours and hours after dosing I ended up smoking a pretty hefty amount of weed (normally an amount that would be on a regular Tuesday night, nothing crazy) and it sent me into what I can only describe as "mini psychosis." During that episode, on my own accord, I ended up surrendering all of my MXPCP (and unfortunately a few other chems that did nothing wrong) to a trusted family member.
2-FXiPr doesn't seem to have this problem, and neither does O-PCP (which is basically ketamine with more body load).
Just a fair warning to all that push it with MXPCP. Space out your doses so that you don't get a buildup of something long that we don't quite understand yet.