Maybe I’ve just been lucking out, but every concert venue I’ve been to recently has let me in with my vape. I usually tell the security person I have it on me, and then they tell me it’s fine and pass me through. You’re right though, it would suck to have to toss it.

I don’t agree with the “smaller” part though. Most of the disposable units I see are thicker and wider than my refillable one, since they need to be long-lasting as a value proposition. I think the main draw is probably pure convenience.