Hi SwiftKate, I might be able to add something to the discussion.
Four years ago I had the lap band inserted. After 2 years it slipped up towards the esophogus and big problems resulted. So all the fluid was removed. (lots more to say about the whole experience but that's for another post).
So now I had the stupid band with minimal constriction. It took me another two years to work up the courage for more surgery (and a relatively unproductive one at that). I didn't go for revision for 2 reasons: 1) was going through the public system and they only do removal and implanting of lapbands, no sleeves. 2) I have a sneaky feeling that scar tissue from banding boosts the chance of complications far beyond what I am comfortable with.
A few weeks after the band was removed, I spoke to the surgeon about getting a sleeve. He showed me the pictures of my scarred stomach, and strongly advised me to put off any weight-loss surgery for at least a year, maybe longer. Too dangerous, not necessary, only rich people are getting the sleeve because they need to look good, etc. etc. now that I think about it, the conversation was a bit strange.
I went away not happy, but also kind of confused about why he was telling me these things. Basically he said if I was healthy in every other way then I would be crazy to have more weightloss surgery at this point.
Something tells me he was thinking of our dear Lila S in Attention Aussie Sleevers forum. He would have definitely been one of the surgeons consulting on her case.
And then he summed it up by saying if I put on weight over Christmas then by all means come back and talk about the sleeve. Which he thinks I will need. Eventually. Hmmm.