I'd say it's lacking in mouthfeel and aftertaste compared to Angostura for that, but it might be interesting trying to swap half of the Angostura in Angostura-heavy cocktails like Trinidad Sour to see how it fares.
I've kept mine in the fridge and they have unfortunately crystallised. I clearly don't go through them fast enough! Next jar I get will go in the cupboard to see how that goes.
I finally came back to this one (forgetting I had already commented on it two years ago)—taking 5mls off the Mezcal and doubling the absinthe made it perfect (for me).