What degree of weight loss did you experience on Adderall?

Background:  42 yr old Executive, just diagnosed with ADD.  Went to the doc to ask about Provigil because though SWD was a stretch, the off label indications (increased focus and some weight loss) were also appealing.  He prescribed Adderall instead 2x20mg for the following reasons:

1.  MAJOR issues focusing.  I do interrupt driven work and work long hours so my ADD helps me in some ways but when it gets too bad I am unable to achieve the productivity I MUST have.

2.  I need to drop about 25 pounds, I'm an avid cyclist but recently herniated a disk and the spine doc wants to see me drop 25 pounds or so.  Hard to exercise that off with a bulging disk jumping up and down on your sciatic nerve.

3. As long as I take the second dose at least 6-7 hours before I go to sleep he thought I would sleep better on Adderall than Provigil since it apparently metabolizes completely in 5-6 hours.

All that preamble to make it clear that no, I did not go to the doctor hoping to get put on Adderall and I am generally averse to taking anything stronger than aspirin for any reason.   Two days into taking Adderall I have noticed the following:

A.  Counter-intuitively, it chills me out.  I do not feel amped up like I do when I guzzle energy drinks.  I have not been drinking caffeinated beverages while on the drug to avoid any potential for a synergistic effect making me too hyper.

B.  I at a small plate of food yesterday for Thanksgiving and had to choke it down.  Today I am forcing myself to consume some protein and a little fruit but it is a conscious decision to eat, I have no appetite whatsoever.

C.  Thirsty!  So I am making myself hydrate well.

Question:  I'm curious as to what degree of weight loss others have experienced on this medication while taking it for the labelled reason at the appropriate dosage?  I'm 5'8, 220 ish.  Around 20% bodyfat (I have the genetic double edged sword - easily gain muscle mass and have heavy bone structure but I gain abdominal fat quite easily). 

I intend to make myself consume small, frequent, 'clean' meals heavy on protein to minimize the catabolic muscle loss associated with amphetamine use and my back is about well enough to start working out carefully again.  I've done a lot of searching on the topic and see a lot of already thin folks who dropped more than they wanted to.  I'd ideally like to get down to around 190 without losing too much lean mass. 

So anyway:  anyone else with similar scenario to mine able to shed some light on what sort of weight loss you experienced?  It wasn't my reason for getting Adderall but as i do some reading I am hopeful that combined with a sensible (forced!) food intake it will help me move the scale where it needs to be for my back and general health.

Thanks in advance!