Lacking a little flavour but surprisingly easy to drink, it's very fresh and would be great on a hot day when you want something light. I prefer it with a little less Campari, despite it being one of my favourite liqueurs, making it 4:4:3.
Unfortunately I found this a bit bland. Also, a little too much on the tequila side; though, on the flip side, it would work well with a nice strong flavoured tequila.
Better than a Moscow Mule, the Cognac works with the ginger. I usually add less sugar syrup for cocktails, but this amount worked well, but that depends on how sweet you ginger beer is.