I use zScaler Cloud for my work proxy, and I choose to have them decrypt all traffic using their CA cert that we have to install on all user laptops. This is critical because they are using heuristics to detect activity types (e.g. don't rely on a "list" of anonymizers, detect that anonymizing is being done and block it). Even if they are sitting at home, the proxy is decrypting all their activity. And the analytics are amazing.
The big difference is between this and the OP, though, is that my company owns these laptops. I display banners and let it be known that you have zero expectation of privacy. Hell, I use my personal iPad for personal browsing at work so as not to be tracked.