It definitely helped fight off cravings for a real cigarette more than straight nic did in the first few months after I quit a 36 year smoking habit. But that was at a wee higher strength than 6mg.
These days, I'm sure I'd get by without it, but after a week or so of vaping nothing but straight nic, I feel like there's something missing, so I keep a mod filled with their WTA on my desk at home and usually have a few drags a day from it.