Dee Stump summed it up best - in comment below from 2022. Very nice scotch cocktail, smokey but still on the approachable side. I think the use of Nux with barrell aged bitters is excellent.
Lower ABV than many (maybe all) espresso martini derivatives - earthy/bitter espresso notes dominate, with only background presence of the rum and syrup sweetness. A nice, simple cocktail that doesn't require a coffee liqueur.
Mexcal is primary, with Lucano adding some flavor and stretching out the smoke. The maraschino is a distant third in importance, unusual for for the strong flavors of maraschino. Very nice mezcal cocktail - pick a mezcal you like! I wish I had read the comments first - chocolate and/or black walnut bitters might have been interesting.
Excellent - the Lucano, Cardamaro and bitters are the keys to the flavor, bringing a depth of moderate earthy herbal, slight spice and slight bitter, with the tequila acting to add a bit of bright citrus. I really enjoyed this, and how it transformed a blanco tequila into something much more complex.