Away Plus for Slack
This app adds a /gone command that can be used instead of /away to both mark yourself as away and set a status at the same time.
For example, when off for lunch, you could enter /gone :bread: Lunchtime and then /gone when you're back. Note you'll probably need to hit return twice for the coming back command.
QuestionsLook, it just sets your status and your presence. What questions could you have? You can say thanks if you like ;) Contact me
I store your user ID and OAuth access token, and that's it. I need permission to edit your profile, but only use that to change the status fields and your presence. Uninstall the app/revoke your token at any time.