Welcome, Lu had a sils when she had her surgery (check out and post on the band forum asking for people who've had SILS) but whether you're having SILS or not, the weight loss will vary according to you. I'm 6 1/2 months from having my band put in and I've lost 7 1/2 stone in that time . . .and have only just found a level of restriction in my band after my last fill - before that point I could eat anything in any amount I wanted, so my losses came from very strict control of every single thing I ate and a lot of exercise. I walk daily, gym 3-4 times a week swim in addition to that 1-3 times a week too. It hasn't been easy, it isn't easy. Its a lot of hard work, careful monitoring of how and what I eat, but I use my band as the tool it is, it isn't the answer to weight loss, but can help in it.
But I LOVE my band!