It should be legal anywhere where smoking is ok, and not an inch less. (More is ok, too.)
They should not be aloud to tell me what I can and can't do within my residence, regardless of what type of residence it is. They're also not aloud to check it out, so I don't care if they wanna try that or not because they'd have to first get a warrant to enter my property.
This isn't really a response to your post so much as a thought that occurred to me reading it...
I often see people saying "I only vape where smoking is allowed. It's the polite thing to do." What they don't seem to understand is that smoking is being banned in more and more places. In Contra Costa County, California, smoking is already banned in multi-unit homes with 4 or more units. The proposed ordinance is amending that to 2 or more units. This is not just government housing - it includes condos and town homes that people own. It includes any apartment building or duplex. So, if you live in a multi-unit building and vape and believe you should only vape where smoking is allowed, you could no longer vape in your own residence - even if you own it. It also means a little old lady in the nursing home or assisted living apartment, where smoking is legally banned, has to go out in the cold to vape. Sick and injured people in hospitals have to go outside to vape - often walking 1/4 mile away, because it's not allowed anywhere on the vast property, even in the parking lot.
The reasons for fighting these bans go FAR beyond being able to vape in a Walmart or Applebees. If we let them ban
vaping anywhere smoking is prohibited, we are opening the door to being prohibited from using our e-cigs in every place they decide to ban smoking in the future. Since no one is really successfully fighting these smoking bans and amendments that add more and more places, our only choice is to fight being included in the bans.