The win quotes/skill quotes seem to have a couple of bugs, which I assume are not intentional, or there is some way I'm doing this incorrectly, here's what I've experienced so far:
1) Skill quotes seem to show up in your win quotes as well, meaning some generic line like "Aha! You can't escape!" will show up in the win results screen by chance.
2) Skill quotes do not adhere to the win quote clauses, if you were to make a skill quote for using Graft only on low HP, then that skill quote will show up regardless of whether you're low HP, full HP or any HP, this holds true for every other clause too.