Sounds like a good way to interpret it.
Let's see..
Holy Shout is F
Jolts from "Mind Destruction" is Fm. Makes sense.
Unminding, same List, is Fm.
Most of the Mentalism Stun spells are Fm. Again, I agree with the book that Mentalism should be type m.
Looks like Channeling doesn't care so much about mental. The stun effect isn't concerned with your attitude/mindset. The physical effect seems to be more important.