Guild Wars 2

Couple of quick questions regarding special “On-Crit” abilities specific to thieves:

1) I understand that if I have 2 “On-Crit” sigils (e.g. Sigil of Nullification + Sigil of Blood) that they share the same cooldown, reducing their effectiveness. Is this cooldown also shared with traits like Sundering Strikes that trigger on critical?

2) On a similar topic, do traits that activate on crit (like Sundering Strikes, Opportunist, Critical Haste, etc.) share the same cooldown?

Thanks for looking.

Traits are on a separate CD from on-crit sigils, and individual traits have their own CDs independent of any other trait.