Allying with Dowhar: you'll get to buy Dowhar Mystic Shield (which is more leaning towards Will, more suitable for mage and poet)

Dowhar Mystic Shield +9
------------------------------
Weapon damage: 0 - 0
Vita/Mana: 1700/850
Durability: 90000
Hit/Damage: 0/0
Might/Grace/Will: 1/4/5
AC: 1950
Protection: 10
Wisdom: 0
Con: -10000


Allying with Bjorn: you'll get to buy Bjorn Hide Shield (which is more leaning towards Might, more suitable for warrior and rogue)

Bjorn Hide Shield +9
------------------------------
Weapon damage: 0 - 0
Vita/Mana: 1700/850
Durability: 90000
Hit/Damage: 0/0
Might/Grace/Will: 5/4/1
AC: 1950
Protection: 10
Wisdom: 0
Con: -10000


The difference is subtle, but matters if you like to min maxing.

Seraph