Help! Will I keep my Ele/Derv?

Will I keep it or will it be deleted. So when the preview event ends, will it be deleted? I am trying out this new combination, and so far, it is actually pretty good, the dervish has some good crowd control attacks and with his air skills, a ele air build with air skills and scyth would probably do some good damage.

So it is the topic. Please help (gw noob here, lol, btw I am looking for a kinda big guild that is newbie friendly, I can follow directions and will not act smart).

Can I also get/exchange/buy new weapons for my Pvp account? Like say if I have a pvp water wand, can I trade for a pvp air wand?

It's a PvP weekend only so it doesn't really matter. You can probably keep the combo but won't be able to use any skills from Nightfalls after the weekend.

You will keep the professions, but you wont have access to any of the Dervish skills.