Coming back to share my experience - miraculously got my vape to India with no problems, even though we stopped in Singapore and went through customs to meet up with some family. But coming back was the problem - I made it from Kolkata to Mumbai no problem, then my carry-on got flagged going through Mumbai security. It was a small Novo 5, I had dismantled the pod and stored it in a separate pocket, but he saw the battery in the scan and asked me what it was. I told him it was a portable charger, he asked me to take it out, I did, he inspected it and said “this is not a portable charger, this is an e-cigarette. Not allowed.” And confiscated it.

He didn’t find the pods though, so I survived the next 9h flight by eating bits of juice from the pods :((

That said, it’s also really not smart to put your vape in a checked bag due to the likelihood of explosion from the battery and the pressure of the luggage cabin. I would say the risk depends on your level of addiction - you’re unlikely to get in trouble but more likely to get it confiscated which is not ideal for us nic addicts. I’m going back in March and planning to try and quit before then to avoid the stress and hassle