You could try to extract the flavor right from the swisher sweets. I have done this with other
tobacco based products (Marb lights, cigars etc). Break two of them up, place in a small container, cover with PG, place plastic wrap or a lid over it. Let it sit for 7-10 days then strain
through a coffee filter. Resulting liquid concentrate can be used to make a DIY
juice. It will not be as strong as flavor extracts and I found I need to mix these extractions at around 20 - 25%. Anyway just a thought for you and not much $$$$ to invest to try it. Best of luck