I actually did the calculations for this before HW released and then again when it did release, I'll see if I can locate that really old post, lol. As people have said before the point difference is really small. During ARR, the stats favored Scholar, so placing your points in Int, showed more benefit. In HW, the stats favor Summoner so having your points in Mind shows more benefit. It might change again for SB who knows. Or I know no one is suggesting this cause it might seem "dumb", but if you are having a hard time deciding and aren't a min/maxer, maybe place them in Piety? Both jobs benefit and you dont have to worry about swapping. Though to be honest I think it gives you like what 30 extra MP, lol, just a thought.