I'm just going to anser the bonus question because I am on MMT. Yes, I consider myself sober. To me, being sober has much less to do with the actual substance and more to do with the behavior that goes along with addiction.
I may be taking a substance, but my behavior is sober. I am trustworthy, honest, responsible in the dealings of my life, emotionally available to my husband and daughter...To me, THAT is a more accurate definition of sobriety.
Of course, in the interest of full disclosure, I still fuck up...not perfect...never gonna' be...and that is a-ok!
And Nark..totally with you on the diabetic/insulin comparison. The only difference is the substance (them food, us drugs)