Not that I noticed. That 10% bonus is multiplicative, not additive, so after spending your hard-earned runes for the next rank you won't see more than a 1% boost to most skills. For example, the initiative song goes from a 19 to 20% chance to happen and the 7% chance to stun song doesn't move up at all.
I might be missing something though... because once I realized that I loaded that save really fast.
