I recently used Peter Stokkebye Turkish Pipe tobacco for a home-brewed extract. Although designated as a pipe tobacco, all the user reviews on Pipes&Cigars.com for that particular blend were from cigarette smokers who lauded PS Turkish as one of the most satisfying RYO blends available. That's why I bought a one-ounce sampler.
The extract is in the same ball park as my cigarette extracts from Nat Sherman MCD and American Spirit Organic. It's made from Turkish Samsoun tobacco (a "legendary" Oriental leaf) that's blended with a couple of different Virginias. While defined as "mildly aromatic," PS Turkish Pipe has little to none of the "pipe blend hybrid effect" that often results from blends that are heavily cased or to which other flavorings are added during curing or blending. Such "hybrid" pipe blends lean toward the dessert end of the scale, either subtly or obviously, which then becomes even more noticeable when they're used to make extract.
I'd hazard a guess that most standard cigarette brands are produced from relatively low-quality tobaccos and are chock-full of fillers and additives. I don't know how extracts made from those would taste. But the high-end specialty cigarettes (such as Nat Sherman and American Spirit) make extracts that are quite clean in flavor, with a truer tobacco taste. I imagine that this would be the case with some of the higher-quality RYO tobaccos as well.