There's the physical addiction and the hand-mouth behavioral part.
Having used a PV for a decent amount of time, I could probably flip over to a patch for at least periods if for some reason I couldn't vape for a while (say, a long plane trip). The hand/mouth, flavor, and physical sensation of inhaling related to
vaping would be missed, but not so bad as trying to go to a patch right from smoking.
Rather than trying to stop
vaping, or going to a patch, I'm just doing a gradual cut in nic level, cutting my eliquid strength by 1 mg/ml each 10 or 20 days. (I DIY a 10 day supply at a time). I saw that when I was
vaping 24 mg/ml my coffee consumption during work at least was cut drastically, I was trading nicotine for caffeine. I'm at 14 mg/ml right now, coffee intake up just slightly.
I don't know if I'll step down all the way to 0 nic, I do like stimulants. I'll probably sit at 12 for a while, once I get there, before continuing downward at least a bit more.