It worked for me, as well as plenty of the people around here. Different people need different approaches. For me, I knew a lowkey, low stress approach would be most effective. I ordered some vape gear and told myself I was going to try to cut down to save money (while sort of hoping I'd be able to switch entirely). I'd just bought a carton a bit before my vape stuff arrived. I smoked whenever I particularly wanted to and vaped otherwise. As I got towards the end of the carton, I was mostly vaping. Instead of rushing out to buy more cigarettes, I decided to wait until I really wanted it before I bought my next pack. That was in 2013, and I still haven't gotten around to it.
Many people here had similar experiences. Others didn't. Some will go on smoking forever unless they make a firm decision to quit, and while the vaping helps they still have more or less of a struggle before they're rid of the cigarettes. We can't tell you how it will work for you, but my recommendation is to jump in and find out!