Noivern is super cool and I bred one just because of that 'they revealed it months before release and I want it badly' factor. noivern isn't the stereotypical dragon though, with frisk being buffed (you can now see /both/ items of the opponents') and it not having the best special attack in the world along with no dragon gem as of yet, noivern is probably going to have a hard time following in its fellow dragons' footsteps. therefore, noivern is probably going to be one of the first dragons we look at in terms of how they can be used differently than what we have been using them as (beatsticks) considering the lengths of which they've been nerfed this generation.
however, noivern doesn't really have too much to work with in terms of support; the only notable supportive moves it gets are tailwind, switcheroo, sunny day, taunt and super fang. so really, the real utility of noivern is frisk and a fighting-type killer, or perhaps a slower dragon check (i.e. latios). so here's a couple of sets that i think noivern could pull off;
Noivern @ Life Orb / Focus Sash
Timid nature, Frisk
4 HP / 252 SpA / 252 Spe
Draco Meteor
Air Slash
Taunt / Tailwind
Protect
OR
Noivern @ Choice Specs
Timid Nature, Frisk
4 HP / 252 SpA / 252 Spe
Draco Meteor
Air Slash
Flamethrower / Focus Blast / Dark Pulse
Switcheroo
The first set takes advantage of tailwind/taunt while the second set makes use of switcheroo to help determine which pokemon would be most crippled by specs (e.g. offensive cress doesn't mind being tricked as much). in both of these sets, noivern faces competition from salamence, which also has a cool ability in intimidate, the same typing, and usually runs similar moves. the biggest difference is that noivern gets taunt and can carry a choice specs while mence is usually better off with scarf, making noivern more powerful than mence in that sense, although it misses out on fire blast even though it gets flamethrower (???).
so i guess the real questions i would like to have addressed in this thread is how useful is frisk, or how useful is knowing what your opponent's item is, especially when we have mega evolutions dependent on hold items? will mega evolutions be hard to spot, or will 'surprise prevention' be worth a team slot? obviously information is important in tourney matches where you're usually doing Bo3 but how worthwhile will frisk be in ladder matches where you might not battle the same person (with the same team) twice? this is all assuming that you picked noivern for frisk alone, but otherwise will noivern be worth it?