I am more interested in the other stats.
For ele I am thinking of: mastery (as much as possible) the rest crit. Not to concerned with haste. I feel the extra dmg fro crit and mastery bonus coupled with echoes will outshine haste.
For resto I am thinking of swapping crit for mastery. This way I can avoid spirit on everything since crits value in mana return plus we have a fair amount of baseline mastery. Not too concerned with haste here either with haste buff fro riptide.
Of course. Gem wise pvp power wherever possible.
Another option maybe just balance it so I can flop each spec with little gear change.