All my vape gear goes carryon, except the charger.
Been flying a lot with my Reo - I DO recommend removing and capping the juice bottle - the time I didn't, it didn't leak a LITTLE, it totally drained the bottle up through the atty, lol.
So I remove the bottle and put an empty on there.
I remove the battery, just cuz.
I leave the atty in place, but wrap it in tissue, just to catch any tube-juice that goes up and out.
NO trouble from TSA though - they don't even blink when I go through security with a Reo, a 'Vari, a bunch of liquid and batteries...all in a laptop or satchel kind of bag.