Thanks -- I just made some changes and iOS and Android are now firing on touchstart. Additionally I cut the slide in animation time by 50%. It feels much snappier!
I also added a back button so it can more easily be run fullscreen.
keep in mind touchstart is fired in swipes as well so binding to touchstart only could have unintended consequences. Like I said there's a lot to consider when it comes to solving the click issue on mobile.
I also added a back button so it can more easily be run fullscreen.