With a heavyweight like Walmart behind CurrentC (say it out loud it makes more sense then) I'm guessing this will never go away. It's funny to me that very few people even knew this existed before Apple Pay went live. My guess is Apple Pay will be the default choice unless you must use CurrentC. Much like how I use my American Express first and then my Visa now.

http://techcrunch.com/2014/10/25/currentc/