My fella quit smoking at the end of September and has been using a reusable vape to stay off. I'm not a fan of vapes myself, but it's definitely preferable to fags.
I had a listen to the Sliced Bread podcast about it hoping it might help wean him off vapes, but after listening to it, I feel a bit better about it.
Link if you're interested https://www.bbc.co.uk/programmes/m001qtqk