I mix flavors in my carts all the time, usually because I can't remember what flavor is in them and top off with whatever I have handy, but I also love to play with flavors.
Drew's flavors I have mixed deliberately:
Pralines & Cream with Butterscotch
Cuban Apple and Black Raspberries & Cream with Juicy Pear
Pear Lung with Sleepytime Green Tea
RY4 with Peanut Butter Cup
I also mix Drew's juice with other flavorings-some examples:
graham cracker/toasted almond/cheesecake mixed with Black Raspberries & Cream, caramel with French Vanilla Coffee, choc fudge brownie with Raspberry Frapaccino, graham cracker/hazelnut mixed with Blueberry Crumble, caramel with Candy Apple, etc...
Lately, I've been playing with what I think of as "comfort flavors". Cream, caramel, vanilla custard, and graham cracker are my current favorites to add to my Nhaler juices, and they are even better now that I finally got some of Drew's 60mg. Right now I am totally blissed out on a mixture of brownie/caramel/custard/mixed with Drew's unflavored and Pralines and Cream.