I think more than 75% of All New Vapers want something that is the Exact Same size as an Analog. I know I did.
And it Isn't until Many Switch that they get Tired of the Battery Life. And Small e-liquid capacity.
I have let Newly Switched people take a Hit off my Kanger Subtank Mini in RBA Mode. Or my eLeaf GS-Tank. You see their Eyes get wide right Before the go... "Wow!"
And then I tell them that the Battery in my "Garage Door Opener" lasts All Day. It Pushes Most of them Over the Top.
But Most would probably have Never Switched if there wasn't something Small for them to Try. So I think Cig-a-Like and Small PV's are Very Important.
BTW - Here is my Favorite Set-Up for when I'm Out-n-About....