Quote Originally Posted by Dervy View Post
It's a 20% chance to happen on a Crit. You have 650 Crit.

((650-354)/(858*5))+0.05 = 11.9% CRT

Meaning, you have a 2.38% to get the Crit SS buff each time your pet strikes.

I assume Pets AAs are also at 3s, at base SS of 354:

Ifrit: 4.70% per 3s
Garuda: 2.38% per 3s

As for Skillspeed interaction... I cannot comment on it. I don't know how Skillspeed interacts with pets, and I may have to ask the good people at /r/math to give me a hand to create a formula.
Skillspeed isn't an option on SMN gear. Wouldn't waste too much time on that point, you got enough to work on.