

It’s more of a public speaker thing than just a politician thing, but… Well, politicians are all public speakers, so it makes sense that that’s the context you’ve seen it in.
It’s literally a practiced gesture - public speaking makes use of some gestures that telegraph well to crowds, but seem unusual otherwise. IIRC, that fishing rod grip is an alternative to gesturing with a fist - it looks less aggressive, but gets the point across.











Yeah, lacking an amaro, I feel like it might be a touch unbalanced.
That said, you could probably make a toned-down version at home. My wife commented recently that Dolin vermouth has some notes that are reminiscent of tomatoes, and they definitely show through when I make negronis with it. Gin, Campari, and Dolin, with the herbal garnish from this instead of an orange peel might work pretty well!