Your question would only make sense if Maemo and MeeGo were two different operating systems. They are not. They are just two different GNU/Linux distributions. (And if you look at the components used in both projects, you'll see they're not even all that different.) On top of all that there's Qt and a user interface layer which is not part of MeeGo, but designed by Nokia - most probably with a look and feel that makes Maemo users feel right at home. So in the end it'll be a bit like having Ubuntu on one PC and Gentoo on the other - which is what I have at home. The names are different, the package formats are different, Ubuntu comes with its own themes... but to me, it's still the same OS: I run the same applications and edit the same config files in the same places.