[kendro]

You cannot pull off a destruction spec without top tier gear.
You cannot pull off a destruction spec without top tier gear.
You cannot pull off a destruction spec without top tier gear.
One last time.
You cannot pull off a destruction spec without top tier gear.

You may have seen some awesome destruction pvp vids, that make you go "oh wow I want to do that"; however, you cannot pull off a destruction spec in arena, even with a healer partner(s), without the highest tiers of gear. This applies in both pve and pvp. In PvE destruction is not worth it until you can get into the end of TK and SSC, arguably it doesn't out perform aff or demo until Hyjal/BT. In arena you cannot use destruction until you have all of the gear for the current season. You have to be an adept lock to pull off a destruction spec against equally geared opponents, and you have to outgear your opponents to pull off destruction with mediocre skill.

If you want to start arena, the undergeared spec of choice is a siphon life/soul link build, abbrievated as sl/sl. It helps migitate damage taken and you are able to heal yourself passively with siphon life. You can use this spec to help start gathering the points to get the destruction gear, but you will only fail if you spec destruction prior to gaining the gear for it.