The back of my four year old tin of OGS says "with a very light touch of perique." Orlik does state that there is perique in OGS, so there is no debate on that; however, the debate is usually centered around whether you could call OGS a VaPer as it really isn't enough perique to make it VaPer.
Perique is like cinnamon, not that it tastes like cinnamon, but in the way you can add a pinch of cinnamon to a pastry to bring out the natural sweetness of the other ingredients, or you can put a lot of cinnamon and get a redhot effect. a little sweetens, a lot makes it peppery. And, you can change the flavor even more by adding in different burleys and orientals to get even different flavors.
Latakia is similar, in that just a whisper of latakia gives Virginias a chewier leathery flavor, and a lot gets more like a campfire flavor.
Then you get into orientals, which vary in the hundreds of different regional varieties, with their pungent aromas that change also by what other leaf is in the mix.
Virginias are all a brightleaf that depend on some delicate nuances of temperature to "cook" them to a range from yellow, to gold, to red, to brown, all giving them different flavor profiles.
Burleys rely on casings or processes mostly to provide them with flavors and make them easier to smoke.
But, thinking that tobacconists just mix things to give them a blend is very shortsighted. That would be like saying that a good chef just measures things together. You have flue curing, cavendish-ing processes, casings, pressing, sweating, aging, marrying processes, and even topping them. Like making an omelette can be some WaffleHouse style glob on your plate, or in the hands of a chef can be transformed into a work of art with the magic of the whisk.