i have vaped a few extracted tobacco juices. tinctures i suppose you'd say. i'm no expert in the field though, simply because tobacco was the only flavor i ever tried and that was only because i had a lot laying around. The flavor wasn't bad, but i wouldn't go out of my way to do it again, just because i feel like the tobacco additives are also being absorbed by the base and cancering me up. That's just my opinion, mind. There is information here on ecf, i haven't read most of it. search for tobacco extraction or tinctures. I know there are a few vendors out there who market naturally extracted flavors, which i assume are simply tinctures. Also heathers heavenly vapes has a lot of extracted tobacco juices i believe. You can use PG, VG, or liquor to make the initial extraction, and then flavor your juice with the resulting mixture. I've even heard of some folks just
vaping a vg extraction straight, but i suppose the longer you let it sit the more flavor will be present in the tincture, so it'd be up to your individual tastes.
that's my .02.