The FDA regs will never stop vaping. When it comes down to it, they didn't stop cigs or other tobacco products under current regulation. They will just try and make things difficult for vapers.
I look at it this way, there has been a war on illegal drugs for decades...they are still around and readily available. Some states have even legalized one drug in particular, even so there is still black market because the legalized product is so heavily taxed. If there is a market and demand for something, there will always be a market for it, illegal or otherwise. It might get harder to get vaping supplies. It might get more expensive to purchase it...legally. No matter what happens, the products will be available. You might have to go underground to get them or you might have to pay more, but they will be there no matter what.
Personally I'm hoping that someone, somewhere will realize the aforementioned and then think that since cigs are legal along with chewing tobacco and snuff, that vaping can't be much worse. Yeah I know, this is a dream, but there is always hope.
I'd love to see the FDA's position on vaping, but I can't stick my head that far up my ass!