No, the bottom line is that it doesn't matter much at all anymore what the Reps in DC have to say about it. They can't ban it, no matter how much they'd like to. They can tax it, but that's not even the worst thing that can happen. The real potential for harm is going to come from the FDA and from the State legislatures. I've been hearing this crap about how Republicans are going to save the day for 3 years now. I have yet to see it. Congress was turned over to the Tea Party in 2010 and did they rein in the FDA? No, they did not. I haven't heard one word from the Orange Man or any of the tri-corn brigade about this issue. The state legislators that have managed to lump vaping into smoking bans have not been any more D than R. You may hear certain politicians from the left speak about it more often because lefty politicians are more likely to adopt health issues as their own. But anyone who thinks the Repubs are going to be white knights on this issue is delusional. They have their own agenda, but crony capitalism doesn't lend itself to public oratory the way health advocacy does.
Furthermore, the FDA is not run by "liberals" by any stretch. It is run by people in bed with, and out to protect, BP, who they consider their "clients". This has been the philosophy of the FDA, and virtually every other regulatory body in the country, since the 80's when they decided to be "facilitators" for industry, rather than overseers.
I'm simply sick of hearing this made a left/right partisan issue. It's not. But to be perfectly honest, even if it were, I'm not so selfish, one dimensional and short sighted as to turn the country over to the current crop of right wing extremists and reactionaries on the basis of any single issue, even vaping.