PvP vs. Role-playing

Are their any differences once you have unlocked the skills you want(and the fact that you can only do PvP). I ask because I have a mesmer male and I hate the way he looks. I was fooling around and saw that the mesmer females looked much better. If I there was no difference I would keep the male and once I had all the skills unlocked I would create a female. Are there any other differences? I see there is a list of "PvP" weapons. Does this list grow as you get yellow/purple items or are you stuck with them? Am I better off starting a female now and not losing any more time on my male?

any skills that are unlocked by any rp character stay unlocked even if you delete the original rp character

What about items? Is it possible to find a better item that I wouldn't be able to use on my pvp charactor?

So, its wise to RP the same type of character you wish to use in PvP first or you wont have any skills to use in PvP games? Am I understanding this correctly?

Bump...getting towards the bottom.