I've done it.
Very foolish in my opinion because even though there was no increase in consumption there was a subtle return to thinking about booze early in the day, and a subtle return to waiting for 'drink' time to come.
In my humble opinion this is quite dangerous simply because the return to pre-Nal drinking/craving/obsession is quite subtle but FAST. In my case I was cured, but even though I was really doing well and having weeks without drinking, a few times I did drink without nal (waiting for shipment) it did not take long to feel the danger. My mental committment went out the window when the physical craving came back. I don't know how this works in the brain - but it does happen.
This is disconcerting because it made me realize for the first time that this is a lifetime committment for many of us. Some like Springrider and Bob seem to have left booze behind but some of us for many different reasons are going to be confronted with this difficulty daily/weekly/whatever - lesson for me and for us all:
Make sure you are committed to TSM for a lifetime if necessary in your case, and make sure you don't run out!!