I put my shaman team on a pve server too. It's more for the fact that I take frequent breaks, and the opportunistic gankers are more of an annoyance than a challenge to me. Plus, there seems to be more world pvp on my server than any of the 10 pvp servers I've played on. And I get to choose when to participate. Some nights I'm into it, some nights I just want to do what I set out to do(farm, instance, whatever). But really, all the action is inside the Arenas, AV, etc anyway.

If I want pvp server action, I have a team on Blackrock pvp. Haven't had the urge to even log there in a month though.

And someday they'll probably open pve to pvp transfers. Hell, they added name changes for $10. If I were Blizz, I'd put it up for $100-200 each toon. Bling bling.