About a year ago, we had a similar discussion. The only difference was that this was not about having one or two Macs but about one or two iPhones (work and personal - or using the work phone for personal stuff):
I - and others - shared our view on that matter there. I think a lot of those thoughts may also be worthy to consider in your situation.
My point of view: I would never put personal data or personal apps on a work device, especially if it is managed with a MDM system (this is me in my job and in my situation). Not only to protect my data but also to protect the company I am working for.