This is where I land on it, with the caveat that it only applies to monk and paladin bases as the others lose much too much out of the deal. I just don't think it rises to +2, especially under the theory (that most of this thread has operated under IIRC) that mostly-defensive benefits don't count for as much unless they come with enough punching power to make you dangerous to ignore - and this doesn't. It's a survivability boost to certain melee-focused types but doesn't bring a whole lot to the table that adds to the actual defeating-your-foes part.