Question [Q] Application profiles?

Is there an app or tool out there that does the following?
I'm looking for something that, say, in one profile, launches apps 1 and 2, has widgets 3 and 4, and maybe launchers 5, 6 and 7, but I can tap a button to switch to a new profile that kills all that. Will Themer let me do this? I'm not sure how it works.

I want to do this because I want to have two different "themes" on my Nexus 7, one very plain and near-default, another that replicates the interface from Sword Art Online.