My Pet Sorc build is most versatile.
Healer one bar Sorc DPS other. Heals vet dungeons and PvP well, but can duel, kill, and DPS when you are queded with light bow spammers
One setup two roles all content
I used to run julianos/riposte/skoria in heavy back when we had more than 2 CP campaigns when farming IC bosses was still possible solo without having 20 other players trying to leech from you. I pulled 19-22k dps depending on the boss (not counting the *** annoying one that keeps teleporting away from you and it's counterpart, the one that spams negates...).
Mag or stam? Class? What kind of pve content and what style of pvp? You can zerg and do most of the PVE content in the same gear. vRoM HM and small scale/bg pvp are a different story. Your best bet is a full damage gear layout, and swapping only CP and skills. Provided you are using the right weapons. If you are doing anything challenging, be a good teamate and just have separate builds.