My surgeon is confident that I will be rid of the fatty liver almost instantaneously and that gives me confidence. I hope its the case for you as well. My blood sugar levels are always in range, but my A1c was borderline; Its now in control with the metformin and he's confident about that as well. As the days go on, I find more reasons that support surgery; Its definitely keeping me going strong on my diet.
Hopefully you wont ever need to go to a hepatologist after surgery!