First, I am kind of lukewarm on grenadine. I do have several but I wear them only with suits these days. For me they are for when I want to look "English," basically a solid suit, 3-piece more often that not, a busy shirt, which calls for a solid tie. Also, I prefer the more matte grenadines to the shinier ones and I like the honeycomb weave more than the standard. I no longer like or wear any tie on the upper half of the formal scale with an odd jacket. Knits are my go-to. Or, repp stripes. Or, wool or linen for seasonality. Certainly not grenadine, which I consider more formal.