Please forgive what appears an obvious question, but some of us just like to be 100% certain where we can:
So working through the details, the documentation for the P600 (which may be outdated because it's R3000 rather than separate), Epson refers to VLM and VM whereas Piezo refers to LM and M for the magentas.
Pretty sure we're talking about the same animals... only now "magentas" are now "Vivint", right?