There are mods out that allow you to wear Companion armour on your Inquisitor. I always found the base Inquisitor armour bland, and though I understand why they did that in a way (neutral so you're not forced to make your Inq look fabulous when you may RP a gritty badass, for example), they really were lacking. It annoyed me to high heaven seeing Dorian run around in his detailed leathers, or Sera who actually looked like a rogue, while I, as an archer, was stuck with badly fitting unique armours, or bland Inq armour. I do hope in DA4 they tone down the race selection and invest more time in armour variety for the PC, so if you DO RP a fabulously dashing rogue or a gritty badass warrior you can look the part. Oh, and no horrific leather scullcaps on helms, good god I would prefer clipping to those.
The mods in question:
Live like Viv - Vivienne's armour.
Inquissandra - Cass' armour.
Sera's Breeches - Sera's armour.
There are more, including for men, but those are the only ones I know of and use.