I actually went and tried it out on an iPad too. I admit it's not as nice an experience - in fact it almost seems buggy, scrolling up past the top of the viewpo

I actually went and tried it out on an iPad too. I admit it's not as nice an experience - in fact it almost seems buggy, scrolling up past the top of the viewport before the JS notices and suddenly pushes it back down. They could improve that. At least make it less jarring.