I had diverticulitis with stricture and abscess, reversal after a year and a half was a success, however it looks like others are not so successful. I suspect it might be due to the condition that caused the surgery in the first place. I have seen successful reversal with similar conditions as mine, but colitis and IBS seem less successful. I know before my reversal I was reading horror stories here, but their condition did not reflect mine.
So if success of reversal is related to the underlying condition, it might help people considering reversal if they had the full story.