As initiative rolls are Simple Cool or Vigilance checks, should Advantage/Threat and Triumph/Despair be spent as with normal checks?
This is already covered in the rules. Read the skill descriptions for Cool and Vigilance and you'll see the relevant details.
Sorry buddy but I can't see an answer to this question, it mentions successes generated but not advantage?
Read the 2nd to last paragraph of the Vigilance skill description. I'm too lazy to type it all out
Thanks, sorry I guess I was looking for it to call out Initiative but instead it says "first round of combat", I guess this kinda clarifies the question and hints that Advantage/ threat etc for both Cool and Vigilence can be used at the start of combat to notice something useful to the rest of the encounter, which will be fun.