this topic always interests me whenever it comes up. It shows the difference in attitude about vaping found not just in the workplace, but pretty much everywhere. I always feel a little sorry for those who have to hide their vape or refrain while at work or who have to use a designated smoking area.
My employers (both owners are non-smokers by the way) not only allow me to vape in the office, in the company vehicles, anywhere on the property etc etc, but in fact, they encourage it. They encourage me to share what I know about vaping with fellow employees and even customers when appropriate.
They have a good reason to encourage vaping even though they have never been tobacco users. They lost their father to a smoking related disease, and they miss him. They look at my vaping as a bit of modern technology that will save or prolong a lot of lives so other people won't have to experience the same loss they did.