If your surgery is being covered by insurance, you also need to consider whether or not their coverage for the Ds includes coverage for SIPS, which is largely considered experimental and generally not covered by insurance. What we've seen in some cases is surgeons using the DS code for SIPS, and insurers being more than a tad bit upset when they figure this out afterwards (with some nasty results for at least one patient being billed after the fact) and other surgeons using very creative combinations of codes to get SIPS covered, which again is something that could come back to bite you in the butt later.
And if you are interpreting the things said here to mean that the post-op diet is the same, I believe you are not getting the part about selective fat malabsorption with the DS. We absorb only about 20 % of the fat we consume, which allows for using all forms of protein and not just lean protein, using cooking methods that include fat or oil, etc. With SIPS, while we don't have good data, it would seem that with the much longer common channel there would be much more at absorption, and thus the diet would need to be much more careful about fat consumption.
For me, the lack of long term data alone would be a deal breaker. But you must make your own decision.
