Hmmm I'm wondering if it actually needs a driver directly for the PLM to use it this way tho with the PH/PLC combo. I mean a PLM has an address right ? Same as any other switchlinc, KPL or lamplinc. From what I understand you can use the PH/PLC to link a switchlinc to another device for example. Wouldn't the PLM just be another device ? I don't need PH to control any lighting. Just setting up and maintaining links when I need to update. But maybe I'm being too optimistic. It all just sounds too easy.
I was in your same shoes months ago when I went with the PLM and was using CQC. It was a pain to link all my devices and create groups on the PLM to use with CQC, and I was trying to get PowerHome to add support. CQC's ability to create PLM links has improved since then, but my CQC project is on hold anyway.
I think you could fool PowerHome by adding the PLM as an ApplianceLinc, and you MAY be able to create links - but I'm not sure if they'd work correctly.
If you give it a try, good luck and please post back your results!