Rarely comment on typos but the review should probably say it's a five-to-one, not a four-to-one.
As far as 5:1 martini garnishes go, I do enjoy a caperberry but why stop there? Which is to say, I can't in good faith say I've tried this as written because I always end up with a caperberry/pickle/onion/olive salad, whatever I can fit on the thing. FWIW, that gets five stars.