Yes, I like that! Especially the 'finishing' of a skill by means of either a teacher or an attribute your character greatly developed.
I was thinking of the Fighters Guild in Divine Divinity. When you defeat the trainer, that could be the only way of having 5 points in the sword or axe skill. (Now you get boomerang or something.)

I am in blood
Stepp'd in so far, that, should I wade no more,
Returning were as tedious as go o'er.