I can tell you that on the 9166 sensors do not work in the "Meraki Persona".
But the XOR 5/6 Ghz radio settings are there and operational.
(I currently have some 9164 and a couple of 9166 in test. They are REALLY nice 🙂 )
So far , everything I have tested on them works. I have not gotten around to test WPN, but since everything else works, I dont see why this should not.
For switches. Well, what you get is basically the MS390 features on a Cat9300.
I guess if you are an org. that really want the same Hardware everywhere then its a good "deal", if not, hmmm ... then I would wait until "Managed" comes to the 9200 series (unless we all of a sudden get more interesting features in the Dashboard --- I mean... just give me VRF LITE ??!?!?!?, and Ill be mostly happy 🙂 )