My Psych told me that if there were two things he could that could help all of us that have weight issues (he is 3 years post op from a LapBand).
1) Destroy the scale
2) Destroy the BMI
A scale does not know what it is weighing, a rock, a frog or a person. He said if there is anything that any of us could do would be to get a tool that uses body composition (body fat, muscle mass, etc). This would allow us to see the changes in our body with the change in our actual makeup and use that tool along with the sleeve. Muscle burns more calories at rest than fat does so by increasing our muscle, we help ourselves in way more than one way.
The BMI is essentially the same rational. It only takes one small step forward from a scale, because again, it only asses weight along with height.
I am with him, I have looked around and they have body comp scales at Walmart for about $30 and that will be my next purchase after I recover from my post-op expenses and such.