I just came across this thread and wanted to add my experience from tonight. I felt like a mad little scientist lol.
So I have a jug of distilled water, and since most of my juice is thick, some is just too thick to wick in my rta. I made up a simple quick 10ml strawberries and cream mix. It came to 20%pg from the flavorings and sweetener, 15%dw and 65%vg. Well... it's quite thin, so I'm thankful I have juice flow control. But I have to say, even as a s&v this vapor is delish and so smooth. Super thin, but tasty. Next time I'll go for the 75%vg 5%dw and 20%pg flavorings
On the other hand, some of the juice I buy is quite harsh, so I may start adding 1% total dw to those to make them less punchy on the inhale.