Managing Multiple accounts for apps My wife and I just bought new android phones for the first time, and are new to the google play store, and I am wondering the best way to manage app store purchases. 

Occasionally I'd like to have an app that she has purchased and vice-verse.

Currently we both to manage our own google ids on each devices and make separate purchases on each id.

In the event I wanted both devices to have the same purchased app, is it advisable to switch the google account in google play store, install the app in question, and then log back in with the primary google account? Will this mess with anything important? Will updates still work, etc?
Note that Google Play Terms of Service prohibits sharing of accounts by multiple person (it allows sharing between multiple devices owned by the same person).

With that said, the Play Store does support multiple accounts, however multiple accounts means that you will also share Gmail, Calendar, etc, which means you probably will have to create a third account specifically created for sharing.