They just make all sorts of stuff I didn't know existed. I'm glad I posted now BC I'd never heard of that til now. I like it.
Well if you have the standard Kennedy with dual airholes, you might want the Demon cap since it adds some needed airflow, IMO. But if you have the Kennedy Comp with four airholes, the airflow is pretty good... I wouldn't mind slightly more from the Demon, but I was shopping for a slam cap for my tugboat and noticed the gremlin caps and just thought they looked so cool. It does add flavor to the already great
vape from the Kennedy, though... plus a lower profile. And you can still put the cap on in any orientation you feel like.