Hi, there are no dumb questions!
However binding AM to Upheaval wouldn’t be the smartest decision: Since Upheaval only procs when WPS don’t proc and we crit. So here we have 59% to proc wps (29% Feral Hunger + 30% Smite). When we hit with Savagery game first rolls the dice to proc wps or not, and it will proc wps 59% of our Savagery hits. Savagery hits without wps only amount to 41% of all Savagery hits. And if you crit during those non wps Savagery hits only then will you proc Upheaval. So basically our Upheaval hits don’t come often enough to bind such important devotion as Assassin’s Mark to Savagery.
You can however bind Maul to one of the wps, which is a bit less reliable than Vire, but for some players it can feel smoother in terms of gameplay.