Kudos to anyone who wants to do bariatrics. My view of the field is skewed by the fact that most patients with a history of RYGB make me think "really? how big were you before?!". Saw one today with a current BMI of 53. My former MA was convinced the surgery was a sham since everyone seems to lose weight and gain it back and more. I tried to point out the successes to her, but TBH they were the minority.
All the guys I know who do bariatrics take GS call to supplement their practice. These are community surgeons, not academics, FWIW, although they also took GS call at my residency program. So lifestyle is basically the same as that of GS from what I've seen.