Hi there, Judging from my experience: I don't use a display manager, nor dbus, systemd, consolekit etc. I'm not sure if these things are popular here (well, systemd at least, as the vast majority here uses OpenBSD, right?). Also I treat my tty sessions as usual sessions, i.e. I need X11 only to surf the net, draw and play some games; in tty vi (nvi) + tmux is just enough. Power button events work fine, thus there is no need to type "halt" or whatever.
Of course, tis just me. I'm sure Arch/Manjaro users will find it useful. Cág