I notice there has been speculation whether pivx is a p&d coin and if they have devs working full time or part time, but let me say this as a matter of fact.
Seval of the PIVX team also work on another project, Fermat IOP. (Markus, Sarah, and Fuzzbawls). I am a supporter of Fermat (even run the MS state chapter, but that's another story) Anyways, I was introduce to PIVX back when it was around 3000 sats by Markus, who suggested I get into it. It has been a great buy. The media hype and boost through social networks has been amazing. Do I think they have any full time devs working and not part time? Well, the github speaks for its self. I think PIVX has potential, however I feel it's reasoning is simply because it's trying to cash in on the hype Dash has brought. I'm not in long term, but I won't say it's a scam. I have noticed about 10 diff alt accounts spamming Polo's trollbox with requests of PIVX and mentions, which is terrible is a terrible marketing practice. (looks shady as fuck). I would steer away from that type of false advertising, but that's just me. Should you invest? Well, use your own judgement of course.