I love Manhattan variations! And I love the fact that with these sorts of simple cocktails, one can choose any preferred combination of rye, amaro, and bitter brands to tweak the drink to one's own preference.
This is wonderful and easy. I'm going to use .25 oz of agave for less sweetness, next time, and I gently squeezed a lime wedge over the top after stirring and pouring into a chilled glass with a big ball of ice.