It’s also worth noting that contrary to how upstream handles it (they hide the fallback mode and the user has to enable an option to use it in place of the GNOME Shell), Debian has a dedicated session for the GNOME 3 fallback mode so you decide what you get right from the login screen. This will be appreciated by the people who do not see GNOME 3 as a step in the right direction. Unless they switch to XFCE as some did.
http://raphaelhertzog.com/2011/10/17/gnome-3-transition-happening-in-debian-u...
tl;dr В Дебиане будет отдельная сессия для логина сразу в fallback mode, что как бы намекает нам, что люди думают о гномошелле.