mo/e was a combo that used to be used for the glyphs, but not much anymore....e/mo is used for healers sometimes now.
I had a r/n, was fun at lower levels, however; never had enough energy to make enough minions to do anything useful--ultimately just used some of the curses (parasitic bond type) to help with healing.....n/r works much better--I have one and having a pet with my minions was pretty good as well as getting the energy back when they die.
I would say play what you wish, you have more than one slot so you can make more than one character and you can always delete one if you really dont like it!
and as Cuilan mentioned, you can change your secondary when you get to the appropriate spot (check out the wiki for more information).
where is the 'all you can eat' cookie bar?