I had my lapband removed on 06/11/2013 at Kaiser for the same reason you did. I have been vomiting for years and had seen a surgeon for a conversion and did not follow through. I thought the vomiting was for another reason. Every person I saw had a theory for the vomiting. I returned back to Kaiser a month ago and they learned I had been vomiting for over two years they removed the band immediately. Kaiser said they had removed most bands and don't use them anymore. I was unable to convert to the sleave as Kaiser won't do convesions. I am grateful for the chance to eat again as I too has been mainly on fluids. On good days I was able to keep down eggs, tuna, Soup and sometimes salad. I also had weeks where I was vomiting up all fluids.
I always had trouble with vomiting but it was easier at times. I lost 70 pounds, put back 50 and then lost 50 again. I am up again to 275 which is less that my 313 starting weight. I am confident I will choose healthy foods and walk so I can get to 200 which is my goal weight. The band did change my relationship with food. I am no longer eating fast foods and sugar. I will look for a lot of support to stay on a food plan and work towards getting healthy again.
I want to say it took an hour and half to remove the band. They needed six incisions to remove it and I am heavily bruised where the port came out. It did not migrate like yours however the scaring was heavy. I hope your surgery goes well.