There is one surgeon at the Cleveland Clinic who has been known to do a DS. I don't know how many he's done, or what his criteria are, or whether or not he has a self-pay plan. These are questions you can ask if you ever get past being put on hold.
Self pay is both a curse and a blessing. The curse part is obvious. The blessing is that you can now choose both your operation of choice and your surgeon. I agree with going to Dr. Ungson in Mexico. He's very experienced, has an excellent reputation, is accustomed to working with people from far out of town, and his hospital gets nothing but rave reviews. There is also a specific hotel where patients stay so they also should be equipped to deal with MO post-ops. I would bet that if you call his office you won't be put on terminal hold and all your questions would be answered by friendly, helpful people.
The surgeon who says dumping is a form of aversion therapy is either misinformed or lying. Honest gastric bypass surgeons, even though they support gastric bypass, will tell their patients that dumping is a potentially very nasty side effect that some but not all patients experience to a mild or severe extent. If that sounds vague, it's because no one knows what percentage of patients dump and because the degree of symptoms is so variable. I've seen reports of 30% dumping all the way to 70%. When you see such an extreme difference in numbers, it tells me that no one really knows.
And don't forget about the NSAIDs. Even if you don't use them now, chances are you will as you get older. They are one of the most commonly prescribed classes of drugs, and also commonly used as OTC drugs. To me, not being able to use NSAIDs would be a very big deal.
Dr. Roslin (now pushing SADI, unfortunately but a very experienced DS surgeon) believes that the future of bariatric surgery will be pylorus sparing. This is a huge change from just a few years ago, when gastric bypass was far and away the most common bariatric operation with everything else at very low percentages. Now, VSG is done much more then even 5 years ago - but as we are seeing, not always with lasting success. I do think VSG is a better choice than gastric bypass because it maintains normal stomach function, avoids dumping, lets people use NSAIDs, no blind stomach, etc. However, the long term results just aren't what was hoped for. And if lap band goes the way of the dodo bird, that would be just fine with me.
You are obviously a very intelligent and thoughtful person who is taking this decision seriously and trying hard to get it right. I wish that were true of everyone. If you are up to learning about the vitamin and protein needs of a DSer - and I am sure you are - and willing to make the crucial but really not difficult commitment to taking those vitamins, eating protein, following your labs, etc - the DS is going to be your best choice for getting to a normal or close to normal weight and STAYING THERE and resolving your comorbidities. And also to avoiding any need for another bariatric operation.
btw, I have a friend who does not post here who had the DS at 62 and has done great with it. So if anyone tells you you're too old, screw them.