Has anyone noticed that sometimes you're able to parry during a monster's WS without it showing in your log?
Looking over my parry skillup screenshots, I have some examples to provide:
Pecking Flurry - G Colibri:
http://www.xfour.org/uploads/parrying1.jpg
Battle Dance - Orcs
http://www.xfour.org/uploads/parrying2.jpg
And before anyone starts trying to point out or flame on me that I'm dumb and have filters set or something, this is how my filters are and always have been:
http://www.xfour.org/uploads/parryingnorm.jpg
Bhaflau Remnants 2F Flans:
http://www.xfour.org/uploads/parrying3.jpg
What's this show so far, to me:
-Pecking Flurry is indeed multi hit, and you can get hit + parry at the same time
-Battle Dance is two hits, and somehow can be parried AOE'd.
XI Wiki

