1 app / 2 main view / 2 tabbar

I there,

want to develop an application with 2 different accesses: Access 1 and Access 2.
Each access with a custom navbar and tabbar.

In my main view I would like to show 2 links to choose which access the user wants.
Then I want to display the requested access.

I think about this structure:
mainview => home (no navbar / no tabbar)
acces1view => acces1 (navbar 1 / tabbar1)
acces2view => acces2 (navbar 2 / tabbar2)

Could you tell me what you think?