I just found this and I want to send it before i forget.

And I quote BR Rulebook page 12: "They [true mage] may choose to be
mages or specialist wizards of any school exept illusion and

And again pg 72 RoE: "Imperial Chaimberlain of Anuire, a 12th/16th-level
duel-class Anuirean Fighter/Diviner"

I tought true mages couldn't be diviners or illusioniusts!!!

Whoever said we need to really talk to TSR and tell them what is good
and we want but we also need to tell tem what is wrong is absolutly
right. The high level dwarf could do it (advancing beyond limits at 2x
XP cost) legally. This however is not so easily proved leagal.