PvP talents in PvE?

So apparently during an interview they let slip that there is an essence in 8.2 that unlocks an extra PvP talent slot, which is then also usable in all PvE. Pretty huge for every class. Will be obtained only through rated PvP.

Any chance the people telling PvPers to suck it up w/ regards to PvE gear in PvP will be fine with this?