Coming from a guy that has been through airport security so many times I should have cancer by now....
Its all up to the TSA Agent and whether or not they are paying attention.
Juice should not be a problem in small quantities... I would reccomend packing your supply of juice in your checked luggage, and just carrying a small (Under 3oz) amount in your carryon for the flight.
Any chargers or passthrough SHOULD get through, but may look suspicious going through xray.
The rules for me are different being flight crew as when Im in uniform I have no liquid limit as to what I can bring on board any airline, however I have spoken to many a TSA Agents regarding ecigs.
From what I have learned there is no specific wording as to if they are allowed or not allowed in the sterile area, its up to the individual screeners discretion, however
eliquid must comply with all other TSA 3-1-1 standards. So make sure in under three ounces and in a 1 quart plastic bag and remove it seperately from your luggage when going through screening.
Good luck and fly safe!
RIA