I've used launchers before--used one with my Vox. I have chosen not to use one for the N7. Instead I installed the ultimate rotation control app.
There is a free trial, but I think it is definitely worth paying the $2.59 CAD. It not only lets you have rotation on the home screen, if you want it, but you can get very granular--assigning an orientation app by app as well.
The developer's website has a full description: http://www.fame-it.nl/rotate