For me use of 3-MeO-PCP was in some ways self-limiting and I never had much trouble keeping it reasonable (if you call daily threshold doses to trial as AD reasonable). But I've already elaborated on why I think its AD potential is a bit of an illusion.
I don't recommend trying 3-MeO-PCP for that purpose and even if I thought it had that kind of activity (the K kind of AD effect that does not require a trip level dosage) its use may not be self-limiting for others as it was for me so I would hate it if it were taken as a recommendation if people assume it is just as safe for everyone.
It's generally a nice drug though in my opinion, don't get me wrong...
IMO if you start using a disso medicinally you would have to use a very low dose K regimen so there shouldn't be much recreational about it at all so also not habit forming since with no direct effects it shouldn't be reinforcing in that way. Therefore the pitfall doesn't seem to be the addictive quality but the self-restraint you would have to exercize to not abuse it when you have it at home and the medicinal administration is enticing to you. Can you have other drugs you like at home without using them, for indefinite periods? I would start with that question. If not, then the problem isn't that the drugs are potentially addictive but that you are (poly / aspecifically) addicted already. Either way no judgement here, I find things like that pretty hard though I am getting better at restraining myself.