Please see my post on VSG Forum
I wouldn't do a revision form band to sleeve.You could go on and need another revision to bypass if you develop acid reflux issues.I had sleeve 2011,2015 started with acid reflux and tried everything. Ended up with bypass 2016.my Hiatal hernia failed from before and had to be repaired again too.This is just my opinion.If you read about revisions though a lot of sleeve patients had acid reflux issues and had to have bypass.