All just my opinion

This is all just my opinion based of my play style, I like to have some damage with my Occultism as well as with my Battlerage, I normally wouldn't try to focus on a hybrid damage build but I look at the primary focus of the class as a tank, with AOE CC for pvp, as well as pve. Keep in mind the tool-tips haven't updated to 2.5 yet on this site, but look at these skill sequences in game. I like to start with -> -> -> -> and finish off with

I will add in a normally after the impale.

With the Occ/Br combo you should start with & primarily if you are facing mages, if you are confident with your tankieness then you can pop against non mages for the bonus damage.

I like to pop & after my cc has worn off because if all goes well then you shouldn't need to parry any attacks in the beginning.

For my Gear, keep in mind this is my opinion on how I play the class, not necessarily best for all play-styles as some might focus more on magic damage or maybe even more so on the melee side, if so you might want to look at gear alternatives. Leather is still a strong pick for pvp, especially if you are focusing more on the melee side.

RH - Scoundrel's Moon (Katana)
Shield - Seer's Anticipation

I would go the Kindled Passion set (Cloth) if you are building the obsidian side

Necklace - Wave
Earrings - Lightning/Lightning
Rings - Gale/Gale
Guild Cloak - Bastion Cloak
Instrument - Wayfaring Jester (Flute)



Also if you are a fan of OCC and not sure if DEF is the way you want to go, you can consider taking Shadowplay and playing a more aggressive class Executioner. Which I have the skill guide up at the moment but haven't gone though the detail guide yet, check it out if you are a fan of OCC, keep in mind the tool-tips are still 2.0 not 2.5 yet, so some skills will read differently here than in game.
Executioner 2.5
If you have any questions or noticed something I haven't mentioned just leave a comment below and I will get back to you.