This is customer abusive.
It is June 2017 and we still don't have Account Switching on our iPhones!
I am paying for 3 Premium Accounts because Evernote did not have the foresight to architect a design that allows us to set a hierarchy of user privileges to give access to Notebooks and Notes to others on a need to know basis.
Therefore, I have to switch back and forth between accounts many times a day on my iPhone without a FUNDAMENTAL feature like Account Switching.