Hi guys!
I did some testing with the Dragon mage just now because I am going to make one in the near future.
However I stumbled across a mistake on the wiki.
The wiki page for Familiar (http://www.sacredwiki.org/index.php/Sacred_2:Familiar) states that the bronze mod insight would overwrite Mentor potions.
For me the Insight mod does not only not overwrite mentor potions it even stacks (more XP from Familiar + Mentor potion than just mentor potion).
For testing I used the level 75-characters (I ofc made sure enemy types and their levels correspond) on silver and platinum difficulty:
Feel free to test for yourself. I really cant see a mistake in this, really basic test but more testing never hurts.
Seems this issue has been fixed at some point.
best regards
Genitor