Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

Fellow role players: what do we Know about this New Summoning System the last update made available?
Scaling summons?
Multiple summons?

Just a place to compilate info, If possible. Thanks.

Palemaster summons do not scale.
Epic Gate does not scale.
Shades does not scale. It summoned a level 20 water elemental, not sure if this is an upgrade.