I have never heard of the Switch. I had the lap band for over a year, and recently converted to the Sleeve 10 days ago. I was VERY disappointed with the lap band. I did great with the band for the first 6 months. I had lost about 40 lbs, then I had something get stuck and it was downhill from there. I was constantly seeing the doctor as things always got stuck. It seems with the band, once you had an issue, it was downhill from there. I gained weight. Spent lots of money going to the doctor to have Fluid let out, then even more money to get fluid back in once my stomach "rested".
My advice.....don't do the band. I know it works for a lot of people.....but the sleeve has been great for me thus far. The band was a nightmare.