I'm cautiously optimistic.
The law is being passed in the EU very soon... But whether we win or not, it won't come into effect until 2016.
vaping has doubled or tripled every year since it was first marketed. That means that by 2016, we will have four to six times the traction that we have now. Decent scientific studies are now answering the questions that need to be asked: what's in the vapour, is it harmful, can it aid smoking cessation.
Politicians may (or may not) be in the pockets of BT and BP, but they can read the writing on the wall and they care about what the electorate wants, at least once every four or five years.
Even if vaping is made illegal in some places, it is being legitimised in others. Those will prove the safety and utility and the nay-sayers will repeal their laws. For a while, that won't be comfortable for all of us. I'm going to Panama soon (if anyone knows the exact situation there, or can read legalise in Spanish, please take a look at my post in the Travel forum) and I've a nasty feeling I'll be back on stinkies for a fortnight. But it won't last forever.
vaping will win in the end, simply because it works. The only way BP can stop it is to replicate it.