Even being able to proc divine veil cure is a waste of a cross class spot, in the rare circumstances that I've had divine veil and the healer didn't proc it I've always had enough mp to clemency to proc it myself and still had enough left over to stoneskin myself and stance swap, there's no need for cure. Maybe if they ever make cure a worthwhile heal in its own right that will change but right now it's just too weak, an open world trash mobs auto attacks will deal more damage than you can cure with a convalescence cure. Until that's not the case, stick with clemency and cross class something useful like protect or mercy stroke in that 5th spot.