Ok, I'm going to actually write something here for this release. I have never been a fan of the vertical slide. However, due to overwhelming numbers of requests for it, here it is.
That said, I have made the executive decision to keep the swipe action for vertical sliding horizontal. I translated the slider width vs slider height so you still have proportional movement, but vertical swiping is for scrolling down a webpage. Not interacting with a component.
I've built a gillion of these things, and fucking with vertical scroll is bad UX.