i build a gentoo out of the box solution for rpi2, use the benefits of gentoo .
i dont have options to test this raw disk image working for other users, pls give some feedback if you are interested in ...
what works, what not ... and things you want to have on a newer release
Good for users that don't want waste time by building linux ... including everything you need to get started

you can download it from
https://www.linuxweb.net/dwnld_image.php
it's german! Userlogin same like in raspbian ...
some informations here: http://raspberry.linuxweb.net/?id=rpi2compatibilitylist
you can add packages that are available in portage ... feel free!
Greetings
Shorty