Tried it. For me, garbage at 25mg, and garbage at 50mg. Felt no dopamine push at all, just an adrenaline jitter.
Then again, I am on Wellbutrin, so my mileage probably varies. Wellbutrin, incidentally, is much more euphoric for me... T+45 mins calm, focused, and socially adept. Maybe ask your doc about it for the smoking (originally why I started, quit cold turkey in a week, zero cravings), and see if you like it.