I haven't but have met a few whilst on my journey post sleeve a year ago. At least three whose scarring from damaged bands left them with leaks. One was in hospital 7 weeks, the worst is still there after 7 months. This is why I am very anti band. Your dr is doing the right thing.
Try not to worry about more surgery til you need to. I've had to have 6 further surgeries since my sleeve due to a number of complications. It's not fun, but you find the strength to get through it.
All the best