AF2 i190 gear is less than a week away. Some of its pieces stats will be tailored for your main job and will be better than generic 1-for-all-healers or 1-for-all-tanks gear.
Why, having MP problems after a few expensive Raises on my WHM I'd rather wait AF2 head, gloves, belt with Piety than get Protoype piceses now (which have zero MP and I actually prefer Asuran with less defense and healing power just for extra Piety).
At the very least I'll wait to see AF2 stats before exchanging anything.