Toggling Between Different Units via Slicer?

Someone at Microsoft asked me this question the other day:

"Sort of like how you've used a slicer for conditional formatting, is it possible to use a slicer to change the custom formatting of a number? In my use case, I want to be able to display currency as either full number ($1,500,000.00) or abbreviated ($1.5M) as the viewer wishes. See below for an example of the desire."