Suppose I wanted to play an alternate tradition to the two main ones described in the rulebook (Hermetic and Shamanistic). For instance, say I wanted to play someone who followed the taoist or buddhist path and was a mage as well? Could I play a taoist or buddhist traidion? I would assume I would still have to choose either logic or charisma for drain, but is there any reason I cannot do this, particularly for a SR5 Missions character?