[RPM] Power Talents Adding to Paths?

[Icelander]

In a setting with both Magery for Ritual Path Magic and supernatural Powers with the Magical limitation, should I allow Power Talents to add to appropriate Path skills or rituals?

For example, if a character has Magery and also some spirit-related Powers, if he takes a Spirit Control Power Talent, should the Power Talent add to his Path of Spirit rolls?

I'm concerned that if not, there is little incentive to take a Power Talent, especially as most of his Magic-as-Abilities are things that don't take a standard success roll, such as an ability to perceive and converse with spirits, spirit allies, etc.

On the other hand, I don't want to alter any fundamental balancing poles of the Ritual Path Magic system, so before I make a judgment on this, I'd at least like to understand what is meant to be the rule and why.