Okay, now I get your idea, I was a bit confused at first!
I've never tried an e-cig, but plan to. In fact I may order a kit this evening.
Now if you did this with a hookah, would you be able to run the vapor through water, or would you have to leave the vase empty? I'm thinking the water would maybe dissolve the vapor, no?
edit: perhaps I am still confused, are you talking about vaporizing shisha itself?