I would imagine the biggest concern would be un even distribution throughout you candies unless you put the exact same amount in individual candy molds when they are just almost cooled. I wouldnt add it before you put it in the molds. It would work most defiantly. you wouldnt believe the stuff they put in suckers round these parts
I'm thinking if I make the base(sugar, corn syrup, water or whatever) and then add the flavoring, nic and a bit of food coloring and then stir, that the nic would be as evenly distributed as the coloring. So if the coloring is even, the nic should be too as long as I put the nic and food coloring in at the same time.
As soon as I get to the store, we are all going to find out. I'll post my failures/successes in this thread.