There was nothing in the patch notes that said PVP Abilities would be exclusive for use in PVP or if they could be used as cross-class in PVE... I'm 50/50 on the issue personally, although there are some abilities that I can see as being greatly beneficial in PVE... but then people will be demanding some oddly high PVP rank (like Must be PVP 30 w/ XYZ abilities and traits) as part of their Party Shouts...