Cones do dress up an ecig and help control leaks. Sometimes, I feel like people see the the Ego/Riva battery threads and think I'm vaping some kind of home made drug delivery device. The cone makes it look legit.
The Riva cone slides easily over a Boge carto or a CE2 clearo and the Ego cone is a push fit that requires reaming.
What kind of big cartos are you guys trying to cover?