For an excellent description of what happened to the compromise vote (all the more excellent for being speculative, having been written before the vote was taken), see Graeme Edgeler's post on the subject.
Back in April I wrote about the conscience vote being taken in Parliament today over alcohol law "reform" (in quotes because reform is supposed to imply changes that improve things). I had this to say about the prospect of a split purchase age:
...or even worse, enacting some kind of split purchase age level so that... so that... well, I'm fucked if I know what the aim of it is apart from making the law a lot more complicated. It seems to be one of those compromises in which you choose the most stupid, pointless, expensive and difficult option exactly and only because you get to call it a compromise.
And also this:
This will be an interesting conscience vote - it will tell us who in Parliament has the integrity to stand up against the practice of picking on a minority for the sake of being seen to do something about a problem. ... Happily, it will also tell us which MPs are such cowardly weasels that they'd inflict by far the worst option on us for the sake of being able to say they reached a compromise.
So, guess which camp the Chief Weasel has declared himself for? You should be able to, it didn't come as any surprise to me.