Google Tasks on iOS

One of the features touted in the app description is the ability to share lists with a spouse. With only one gmail account this is tricky assuming the spouse and myself both use gmail tasks in our own gmail accounts. The great thing about google tasks is that they are right there accessible to you while in your gmail account. In order to share lists with somebody pratically, you need to be able to enter multiple accounts into geetasks for it to fetch and sync lists from. It would be great if google allowed sharing of individual lists natively, but until they do, the ability to login to multiple accounts from geetasks would be a good workaround.