Originally Posted by javabytes

Then what do you do with the pre-paid Visa? I guess it's good if you are short of a threshhold in December and have a bunch of spend planned right around the corner in January.

But barring that, whatever you load onto the Visa is just prepaying for stuff you would have otherwise used your AmEx on later, so you're not really gaining any ground... or you swipe the prepaid card on something like Square, but then you incur a 2-3% fee and risk running afoul of merchant regs.